cvelist/2023/52xxx/CVE-2023-52885.json
2024-11-04 13:01:15 +00:00

168 lines
11 KiB
JSON

{
"data_version": "4.0",
"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2023-52885",
"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
},
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix UAF in svc_tcp_listen_data_ready()\n\nAfter the listener svc_sock is freed, and before invoking svc_tcp_accept()\nfor the established child sock, there is a window that the newsock\nretaining a freed listener svc_sock in sk_user_data which cloning from\nparent. In the race window, if data is received on the newsock, we will\nobserve use-after-free report in svc_tcp_listen_data_ready().\n\nReproduce by two tasks:\n\n1. while :; do rpc.nfsd 0 ; rpc.nfsd; done\n2. while :; do echo \"\" | ncat -4 127.0.0.1 2049 ; done\n\nKASAN report:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in svc_tcp_listen_data_ready+0x1cf/0x1f0 [sunrpc]\n Read of size 8 at addr ffff888139d96228 by task nc/102553\n CPU: 7 PID: 102553 Comm: nc Not tainted 6.3.0+ #18\n Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020\n Call Trace:\n <IRQ>\n dump_stack_lvl+0x33/0x50\n print_address_description.constprop.0+0x27/0x310\n print_report+0x3e/0x70\n kasan_report+0xae/0xe0\n svc_tcp_listen_data_ready+0x1cf/0x1f0 [sunrpc]\n tcp_data_queue+0x9f4/0x20e0\n tcp_rcv_established+0x666/0x1f60\n tcp_v4_do_rcv+0x51c/0x850\n tcp_v4_rcv+0x23fc/0x2e80\n ip_protocol_deliver_rcu+0x62/0x300\n ip_local_deliver_finish+0x267/0x350\n ip_local_deliver+0x18b/0x2d0\n ip_rcv+0x2fb/0x370\n __netif_receive_skb_one_core+0x166/0x1b0\n process_backlog+0x24c/0x5e0\n __napi_poll+0xa2/0x500\n net_rx_action+0x854/0xc90\n __do_softirq+0x1bb/0x5de\n do_softirq+0xcb/0x100\n </IRQ>\n <TASK>\n ...\n </TASK>\n\n Allocated by task 102371:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n __kasan_kmalloc+0x7b/0x90\n svc_setup_socket+0x52/0x4f0 [sunrpc]\n svc_addsock+0x20d/0x400 [sunrpc]\n __write_ports_addfd+0x209/0x390 [nfsd]\n write_ports+0x239/0x2c0 [nfsd]\n nfsctl_transaction_write+0xac/0x110 [nfsd]\n vfs_write+0x1c3/0xae0\n ksys_write+0xed/0x1c0\n do_syscall_64+0x38/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\n Freed by task 102551:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_save_free_info+0x2a/0x50\n __kasan_slab_free+0x106/0x190\n __kmem_cache_free+0x133/0x270\n svc_xprt_free+0x1e2/0x350 [sunrpc]\n svc_xprt_destroy_all+0x25a/0x440 [sunrpc]\n nfsd_put+0x125/0x240 [nfsd]\n nfsd_svc+0x2cb/0x3c0 [nfsd]\n write_threads+0x1ac/0x2a0 [nfsd]\n nfsctl_transaction_write+0xac/0x110 [nfsd]\n vfs_write+0x1c3/0xae0\n ksys_write+0xed/0x1c0\n do_syscall_64+0x38/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nFix the UAF by simply doing nothing in svc_tcp_listen_data_ready()\nif state != TCP_LISTEN, that will avoid dereferencing svsk for all\nchild socket."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"affects": {
"vendor": {
"vendor_data": [
{
"vendor_name": "Linux",
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "<",
"version_name": "fa9251afc33c",
"version_value": "c7b8c2d06e43"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "4.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.8",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "4.14.322",
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "4.19.291",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.251",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.188",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.121",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.39",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.4.4",
"lessThanOrEqual": "6.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.5",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
],
"defaultStatus": "affected"
}
}
]
}
}
]
}
}
]
}
},
"references": {
"reference_data": [
{
"url": "https://git.kernel.org/stable/c/c7b8c2d06e437639694abe76978e915cfb73f428",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/c7b8c2d06e437639694abe76978e915cfb73f428"
},
{
"url": "https://git.kernel.org/stable/c/dfc896c4a75cb8cd7cb2dfd9b469cf1e3f004254",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/dfc896c4a75cb8cd7cb2dfd9b469cf1e3f004254"
},
{
"url": "https://git.kernel.org/stable/c/42725e5c1b181b757ba11d804443922982334d9b",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/42725e5c1b181b757ba11d804443922982334d9b"
},
{
"url": "https://git.kernel.org/stable/c/cd5ec3ee52ce4b7e283cc11facfa420c297c8065",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/cd5ec3ee52ce4b7e283cc11facfa420c297c8065"
},
{
"url": "https://git.kernel.org/stable/c/fbf4ace39b2e4f3833236afbb2336edbafd75eee",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/fbf4ace39b2e4f3833236afbb2336edbafd75eee"
},
{
"url": "https://git.kernel.org/stable/c/ef047411887ff0845afd642d6a687819308e1a4e",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/ef047411887ff0845afd642d6a687819308e1a4e"
},
{
"url": "https://git.kernel.org/stable/c/7e1f989055622fd086c5dfb291fc72adf5660b6f",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/7e1f989055622fd086c5dfb291fc72adf5660b6f"
},
{
"url": "https://git.kernel.org/stable/c/fc80fc2d4e39137869da3150ee169b40bf879287",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/fc80fc2d4e39137869da3150ee169b40bf879287"
}
]
},
"generator": {
"engine": "bippy-9e1c9544281a"
}
}