nvd-json-data-feeds/CVE-2022/CVE-2022-488xx/CVE-2022-48839.json

{
  "id": "CVE-2022-48839",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-07-16T13:15:11.353",
  "lastModified": "2024-07-18T16:04:39.003",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: fix slab-out-of-bounds access in packet_recvmsg()\n\nsyzbot found that when an AF_PACKET socket is using PACKET_COPY_THRESH\nand mmap operations, tpacket_rcv() is queueing skbs with\ngarbage in skb->cb[], triggering a too big copy [1]\n\nPresumably, users of af_packet using mmap() already gets correct\nmetadata from the mapped buffer, we can simply make sure\nto clear 12 bytes that might be copied to user space later.\n\nBUG: KASAN: stack-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline]\nBUG: KASAN: stack-out-of-bounds in packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\nWrite of size 165 at addr ffffc9000385fb78 by task syz-executor233/3631\n\nCPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0xf/0x336 mm/kasan/report.c:255\n __kasan_report mm/kasan/report.c:442 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:459\n check_region_inline mm/kasan/generic.c:183 [inline]\n kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189\n memcpy+0x39/0x60 mm/kasan/shadow.c:66\n memcpy include/linux/fortify-string.h:225 [inline]\n packet_recvmsg+0x56c/0x1150 net/packet/af_packet.c:3489\n sock_recvmsg_nosec net/socket.c:948 [inline]\n sock_recvmsg net/socket.c:966 [inline]\n sock_recvmsg net/socket.c:962 [inline]\n ____sys_recvmsg+0x2c4/0x600 net/socket.c:2632\n ___sys_recvmsg+0x127/0x200 net/socket.c:2674\n __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7fdfd5954c29\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffcf8e71e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002f\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000005\nRBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8e71e60\nR13: 00000000000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54\n </TASK>\n\naddr ffffc9000385fb78 is located in stack of task syz-executor233/3631 at offset 32 in frame:\n ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246\n\nthis frame has 1 object:\n [32, 160) 'addr'\n\nMemory state around the buggy address:\n ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00\n ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00\n>ffffc9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3\n                                                                ^\n ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1\n ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00\n=================================================================="
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/packet: corrige el acceso slab-out-of-bounds en paquete_recvmsg() syzbot descubri\u00f3 que cuando un socket AF_PACKET utiliza operaciones PACKET_COPY_THRESH y mmap, tpacket_rcv() est\u00e1 poniendo en cola skbs con basura en skb-&gt;cb[], lo que desencadena una copia demasiado grande [1] Presumiblemente, los usuarios de af_packet que usan mmap() ya obtienen los metadatos correctos del b\u00fafer asignado, simplemente podemos asegurarnos de borrar 12 bytes que podr\u00edan copiarse al usuario espacio m\u00e1s tarde. ERROR: KASAN: pila fuera de los l\u00edmites en memcpy include/linux/fortify-string.h:225 [en l\u00ednea] ERROR: KASAN: pila fuera de los l\u00edmites en paquete_recvmsg+0x56c/0x1150 net/packet/af_packet. c:3489 Escritura de tama\u00f1o 165 en la direcci\u00f3n ffffc9000385fb78 por tarea syz-executor233/3631 CPU: 0 PID: 3631 Comm: syz-executor233 Not tainted 5.17.0-rc7-syzkaller-02396-g0b3660695e80 #0 Nombre de hardware: Google Google Compute Engine /Google Compute Engine, BIOS Google 01/01/2011 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xf /0x336 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [en l\u00ednea] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [en l\u00ednea] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memcpy+0x39/0x60 mm/kasan/shadow.c:66 memcpy include/linux/fortify-string.h:225 [en l\u00ednea] paquete_recvmsg+0x56c/ 0x1150 net/packet/af_packet.c:3489 sock_recvmsg_nosec net/socket.c:948 [en l\u00ednea] sock_recvmsg net/socket.c:966 [en l\u00ednea] sock_recvmsg net/socket.c:962 [en l\u00ednea] ____sys_recvmsg+0x2c4/0x600 net/ socket.c:2632 ___sys_recvmsg+0x127/0x200 net/socket.c:2674 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2704 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] arco xb0 /x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fdfd5954c29 C\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 &lt;48&gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcf8e71e48 EFLAGS: 0000246 ORIG_RAX: 000000000000002f RAX : ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdfd5954c29 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 000000000000005 RBP: 0000000 000000000 R08: 000000000000000d R09: 000000000000000d R10: 0000000000000000 R11: 00000000000000246 R12: 00007ffcf8e71e60 R13: 0000f4240 R14: 000000000000c1ff R15: 00007ffcf8e71e54  direcci\u00f3n ffffc9000385fb78 est\u00e1 ubicado en la pila de la tarea syz-executor233/3631 en el desplazamiento 32 en el marco: ____sys_recvmsg+0x0/0x600 include/linux/uio.h:246 este marco tiene 1 objeto: [32, 160) 'addr' Estado de memoria alrededor del buggy direcci\u00f3n: ffffc9000385fa80: 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 ffffc9000385fb00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 c9000385fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f3 ^ ffffc9000385fc00: f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 f1 ffffc9000385fc80: f1 f1 f1 00 f2 f2 f2 00 f2 f2 f2 0 0 00 00 00 00 ====== ==================================================== =========="
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "configurations": [
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          "negate": false,
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