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cvelist/2023/52xxx/CVE-2023-52751.json
CVE Team 6650b0abfa
"-Synchronized-Data."
2024-11-04 13:02:37 +00:00

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{
"data_version": "4.0",
"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2023-52751",
"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
},
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix use-after-free in smb2_query_info_compound()\n\nThe following UAF was triggered when running fstests generic/072 with\nKASAN enabled against Windows Server 2022 and mount options\n'multichannel,max_channels=2,vers=3.1.1,mfsymlinks,noperm'\n\n BUG: KASAN: slab-use-after-free in smb2_query_info_compound+0x423/0x6d0 [cifs]\n Read of size 8 at addr ffff888014941048 by task xfs_io/27534\n\n CPU: 0 PID: 27534 Comm: xfs_io Not tainted 6.6.0-rc7 #1\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\n rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014\n Call Trace:\n dump_stack_lvl+0x4a/0x80\n print_report+0xcf/0x650\n ? srso_alias_return_thunk+0x5/0x7f\n ? srso_alias_return_thunk+0x5/0x7f\n ? __phys_addr+0x46/0x90\n kasan_report+0xda/0x110\n ? smb2_query_info_compound+0x423/0x6d0 [cifs]\n ? smb2_query_info_compound+0x423/0x6d0 [cifs]\n smb2_query_info_compound+0x423/0x6d0 [cifs]\n ? __pfx_smb2_query_info_compound+0x10/0x10 [cifs]\n ? srso_alias_return_thunk+0x5/0x7f\n ? __stack_depot_save+0x39/0x480\n ? kasan_save_stack+0x33/0x60\n ? kasan_set_track+0x25/0x30\n ? ____kasan_slab_free+0x126/0x170\n smb2_queryfs+0xc2/0x2c0 [cifs]\n ? __pfx_smb2_queryfs+0x10/0x10 [cifs]\n ? __pfx___lock_acquire+0x10/0x10\n smb311_queryfs+0x210/0x220 [cifs]\n ? __pfx_smb311_queryfs+0x10/0x10 [cifs]\n ? srso_alias_return_thunk+0x5/0x7f\n ? __lock_acquire+0x480/0x26c0\n ? lock_release+0x1ed/0x640\n ? srso_alias_return_thunk+0x5/0x7f\n ? do_raw_spin_unlock+0x9b/0x100\n cifs_statfs+0x18c/0x4b0 [cifs]\n statfs_by_dentry+0x9b/0xf0\n fd_statfs+0x4e/0xb0\n __do_sys_fstatfs+0x7f/0xe0\n ? __pfx___do_sys_fstatfs+0x10/0x10\n ? srso_alias_return_thunk+0x5/0x7f\n ? lockdep_hardirqs_on_prepare+0x136/0x200\n ? srso_alias_return_thunk+0x5/0x7f\n do_syscall_64+0x3f/0x90\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\n Allocated by task 27534:\n kasan_save_stack+0x33/0x60\n kasan_set_track+0x25/0x30\n __kasan_kmalloc+0x8f/0xa0\n open_cached_dir+0x71b/0x1240 [cifs]\n smb2_query_info_compound+0x5c3/0x6d0 [cifs]\n smb2_queryfs+0xc2/0x2c0 [cifs]\n smb311_queryfs+0x210/0x220 [cifs]\n cifs_statfs+0x18c/0x4b0 [cifs]\n statfs_by_dentry+0x9b/0xf0\n fd_statfs+0x4e/0xb0\n __do_sys_fstatfs+0x7f/0xe0\n do_syscall_64+0x3f/0x90\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n\n Freed by task 27534:\n kasan_save_stack+0x33/0x60\n kasan_set_track+0x25/0x30\n kasan_save_free_info+0x2b/0x50\n ____kasan_slab_free+0x126/0x170\n slab_free_freelist_hook+0xd0/0x1e0\n __kmem_cache_free+0x9d/0x1b0\n open_cached_dir+0xff5/0x1240 [cifs]\n smb2_query_info_compound+0x5c3/0x6d0 [cifs]\n smb2_queryfs+0xc2/0x2c0 [cifs]\n\nThis is a race between open_cached_dir() and cached_dir_lease_break()\nwhere the cache entry for the open directory handle receives a lease\nbreak while creating it. And before returning from open_cached_dir(),\nwe put the last reference of the new @cfid because of\n!@cfid->has_lease.\n\nBesides the UAF, while running xfstests a lot of missed lease breaks\nhave been noticed in tests that run several concurrent statfs(2) calls\non those cached fids\n\n CIFS: VFS: \\\\w22-root1.gandalf.test No task to wake, unknown frame...\n CIFS: VFS: \\\\w22-root1.gandalf.test Cmd: 18 Err: 0x0 Flags: 0x1...\n CIFS: VFS: \\\\w22-root1.gandalf.test smb buf 00000000715bfe83 len 108\n CIFS: VFS: Dump pending requests:\n CIFS: VFS: \\\\w22-root1.gandalf.test No task to wake, unknown frame...\n CIFS: VFS: \\\\w22-root1.gandalf.test Cmd: 18 Err: 0x0 Flags: 0x1...\n CIFS: VFS: \\\\w22-root1.gandalf.test smb buf 000000005aa7316e len 108\n ...\n\nTo fix both, in open_cached_dir() ensure that @cfid->has_lease is set\nright before sending out compounded request so that any potential\nlease break will be get processed by demultiplex thread while we're\nstill caching @cfid. And, if open failed for some reason, re-check\n@cfid->has_lease to decide whether or not put lease reference."
}
]
},
"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": "1da177e4c3f4",
"version_value": "6db94d08359c"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "6.5.13",
"lessThanOrEqual": "6.5.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.3",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.7",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
],
"defaultStatus": "affected"
}
}
]
}
}
]
}
}
]
}
},
"references": {
"reference_data": [
{
"url": "https://git.kernel.org/stable/c/6db94d08359c43f2c8fe372811cdee04564a41b9",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/6db94d08359c43f2c8fe372811cdee04564a41b9"
},
{
"url": "https://git.kernel.org/stable/c/93877b9afc2994c89362007aac480a7b150f386f",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/93877b9afc2994c89362007aac480a7b150f386f"
},
{
"url": "https://git.kernel.org/stable/c/5c86919455c1edec99ebd3338ad213b59271a71b",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/5c86919455c1edec99ebd3338ad213b59271a71b"
}
]
},
"generator": {
"engine": "bippy-9e1c9544281a"
}
}
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