{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48919","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-08-21T06:06:23.295Z","datePublished":"2024-08-22T01:32:43.390Z","dateUpdated":"2025-12-23T13:21:07.331Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-12-23T13:21:07.331Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix double free race when mount fails in cifs_get_root()\n\nWhen cifs_get_root() fails during cifs_smb3_do_mount() we call\ndeactivate_locked_super() which eventually will call delayed_free() which\nwill free the context.\nIn this situation we should not proceed to enter the out: section in\ncifs_smb3_do_mount() and free the same resources a second time.\n\n[Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0\n\n[Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G           OE     5.17.0-rc3+ #4\n[Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019\n[Thu Feb 10 12:59:06 2022] Call Trace:\n[Thu Feb 10 12:59:06 2022]  <IRQ>\n[Thu Feb 10 12:59:06 2022]  dump_stack_lvl+0x5d/0x78\n[Thu Feb 10 12:59:06 2022]  print_address_description.constprop.0+0x24/0x150\n[Thu Feb 10 12:59:06 2022]  ? rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022]  kasan_report.cold+0x7d/0x117\n[Thu Feb 10 12:59:06 2022]  ? rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022]  __asan_load8+0x86/0xa0\n[Thu Feb 10 12:59:06 2022]  rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022]  rcu_core+0x547/0xca0\n[Thu Feb 10 12:59:06 2022]  ? call_rcu+0x3c0/0x3c0\n[Thu Feb 10 12:59:06 2022]  ? __this_cpu_preempt_check+0x13/0x20\n[Thu Feb 10 12:59:06 2022]  ? lock_is_held_type+0xea/0x140\n[Thu Feb 10 12:59:06 2022]  rcu_core_si+0xe/0x10\n[Thu Feb 10 12:59:06 2022]  __do_softirq+0x1d4/0x67b\n[Thu Feb 10 12:59:06 2022]  __irq_exit_rcu+0x100/0x150\n[Thu Feb 10 12:59:06 2022]  irq_exit_rcu+0xe/0x30\n[Thu Feb 10 12:59:06 2022]  sysvec_hyperv_stimer0+0x9d/0xc0\n...\n[Thu Feb 10 12:59:07 2022] Freed by task 58179:\n[Thu Feb 10 12:59:07 2022]  kasan_save_stack+0x26/0x50\n[Thu Feb 10 12:59:07 2022]  kasan_set_track+0x25/0x30\n[Thu Feb 10 12:59:07 2022]  kasan_set_free_info+0x24/0x40\n[Thu Feb 10 12:59:07 2022]  ____kasan_slab_free+0x137/0x170\n[Thu Feb 10 12:59:07 2022]  __kasan_slab_free+0x12/0x20\n[Thu Feb 10 12:59:07 2022]  slab_free_freelist_hook+0xb3/0x1d0\n[Thu Feb 10 12:59:07 2022]  kfree+0xcd/0x520\n[Thu Feb 10 12:59:07 2022]  cifs_smb3_do_mount+0x149/0xbe0 [cifs]\n[Thu Feb 10 12:59:07 2022]  smb3_get_tree+0x1a0/0x2e0 [cifs]\n[Thu Feb 10 12:59:07 2022]  vfs_get_tree+0x52/0x140\n[Thu Feb 10 12:59:07 2022]  path_mount+0x635/0x10c0\n[Thu Feb 10 12:59:07 2022]  __x64_sys_mount+0x1bf/0x210\n[Thu Feb 10 12:59:07 2022]  do_syscall_64+0x5c/0xc0\n[Thu Feb 10 12:59:07 2022]  entry_SYSCALL_64_after_hwframe+0x44/0xae\n\n[Thu Feb 10 12:59:07 2022] Last potentially related work creation:\n[Thu Feb 10 12:59:07 2022]  kasan_save_stack+0x26/0x50\n[Thu Feb 10 12:59:07 2022]  __kasan_record_aux_stack+0xb6/0xc0\n[Thu Feb 10 12:59:07 2022]  kasan_record_aux_stack_noalloc+0xb/0x10\n[Thu Feb 10 12:59:07 2022]  call_rcu+0x76/0x3c0\n[Thu Feb 10 12:59:07 2022]  cifs_umount+0xce/0xe0 [cifs]\n[Thu Feb 10 12:59:07 2022]  cifs_kill_sb+0xc8/0xe0 [cifs]\n[Thu Feb 10 12:59:07 2022]  deactivate_locked_super+0x5d/0xd0\n[Thu Feb 10 12:59:07 2022]  cifs_smb3_do_mount+0xab9/0xbe0 [cifs]\n[Thu Feb 10 12:59:07 2022]  smb3_get_tree+0x1a0/0x2e0 [cifs]\n[Thu Feb 10 12:59:07 2022]  vfs_get_tree+0x52/0x140\n[Thu Feb 10 12:59:07 2022]  path_mount+0x635/0x10c0\n[Thu Feb 10 12:59:07 2022]  __x64_sys_mount+0x1bf/0x210\n[Thu Feb 10 12:59:07 2022]  do_syscall_64+0x5c/0xc0\n[Thu Feb 10 12:59:07 2022]  entry_SYSCALL_64_after_hwframe+0x44/0xae"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/cifsfs.c"],"versions":[{"version":"d17abdf7566566fc402c31899b353044a7ff3cf4","lessThan":"546d60859ecf13380fcabcbeace53a5971493a2b","status":"affected","versionType":"git"},{"version":"d17abdf7566566fc402c31899b353044a7ff3cf4","lessThan":"563431c1f3c8f2230e4a9c445fa23758742bc4f0","status":"affected","versionType":"git"},{"version":"d17abdf7566566fc402c31899b353044a7ff3cf4","lessThan":"3d6cc9898efdfb062efb74dc18cfc700e082f5d5","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/cifsfs.c"],"versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","status":"unaffected","versionType":"semver"},{"version":"5.15.27","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.13","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.16.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b"},{"url":"https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0"},{"url":"https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e082f5d5"}],"title":"cifs: fix double free race when mount fails in cifs_get_root()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48919","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:33:34.933209Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-12T17:33:11.259Z"}}]}}