{"api_version":"1","generated_at":"2026-08-04T17:10:28+00:00","cve":"CVE-2022-48919","urls":{"html":"https://cve.report/CVE-2022-48919","api":"https://cve.report/api/cve/CVE-2022-48919.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-48919","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-48919"},"summary":{"title":"cifs: fix double free race when mount fails in cifs_get_root()","description":"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","state":"PUBLISHED","assigner":"Linux","published_at":"2024-08-22 02:15:05","updated_at":"2026-08-04 10:17:26"},"problem_types":["CWE-415"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b","name":"https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e082f5d5","name":"https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e082f5d5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0","name":"https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-48919","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48919","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d17abdf7566566fc402c31899b353044a7ff3cf4 546d60859ecf13380fcabcbeace53a5971493a2b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d17abdf7566566fc402c31899b353044a7ff3cf4 563431c1f3c8f2230e4a9c445fa23758742bc4f0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d17abdf7566566fc402c31899b353044a7ff3cf4 3d6cc9898efdfb062efb74dc18cfc700e082f5d5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.27 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.16.13 5.16.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.17 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"48919","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2022-48919","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2024-09-10T15:33:34.933209Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2024-09-12T17:33:11.259Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/cifs/cifsfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"546d60859ecf13380fcabcbeace53a5971493a2b","status":"affected","version":"d17abdf7566566fc402c31899b353044a7ff3cf4","versionType":"git"},{"lessThan":"563431c1f3c8f2230e4a9c445fa23758742bc4f0","status":"affected","version":"d17abdf7566566fc402c31899b353044a7ff3cf4","versionType":"git"},{"lessThan":"3d6cc9898efdfb062efb74dc18cfc700e082f5d5","status":"affected","version":"d17abdf7566566fc402c31899b353044a7ff3cf4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/cifs/cifsfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.11"},{"lessThan":"5.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.27","versionType":"semver"},{"lessThanOrEqual":"5.16.*","status":"unaffected","version":"5.16.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"5.17","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.27","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.16.13","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.17","versionStartIncluding":"5.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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"}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:03:08.863Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2022-48919","datePublished":"2024-08-22T01:32:43.390Z","dateReserved":"2024-08-21T06:06:23.295Z","dateUpdated":"2026-08-04T09:03:08.863Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-08-22 02:15:05","lastModifiedDate":"2026-08-04 10:17:26","problem_types":["CWE-415"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9},{"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:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2024-09-10T15:33:34.933209Z","id":"CVE-2022-48919","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.9.305","matchCriteriaId":"2812DEB9-FC99-48E3-ABCB-F07B62FBBCA9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.270","matchCriteriaId":"51C0B6F2-A904-4FE6-B06B-CE26226B22B7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.233","matchCriteriaId":"B59A7E33-6262-458E-AC76-E8CC4E812344"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.183","matchCriteriaId":"76A7616E-E6B9-4A7F-AA7C-1D47F774215F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.104","matchCriteriaId":"764998FC-D1F7-4BAA-BD56-A553C7AB8F08"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.27","matchCriteriaId":"B3A8E092-3021-4A34-8DCE-B89D2238818B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"5.16.13","matchCriteriaId":"B871B667-EDC0-435D-909E-E918D8D90995"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"48919","Ordinal":"1","Title":"cifs: fix double free race when mount fails in cifs_get_root()","CVE":"CVE-2022-48919","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"48919","Ordinal":"1","NoteData":"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","Type":"Description","Title":"cifs: fix double free race when mount fails in cifs_get_root()"}]}}}