CVE-2021-47145

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47145", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-04T18:12:48.845Z", "datePublished": "2024-03-25T09:07:42.384Z", "dateUpdated": "2026-05-11T13:48:54.208Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:48:54.208Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: do not BUG_ON in link_to_fixup_dir\n\nWhile doing error injection testing I got the following panic\n\n kernel BUG at fs/btrfs/tree-log.c:1862!\n invalid opcode: 0000 [#1] SMP NOPTI\n CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014\n RIP: 0010:link_to_fixup_dir+0xd5/0xe0\n RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216\n RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0\n RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000\n RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001\n R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800\n R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065\n FS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0\n Call Trace:\n replay_one_buffer+0x409/0x470\n ? btree_read_extent_buffer_pages+0xd0/0x110\n walk_up_log_tree+0x157/0x1e0\n walk_log_tree+0xa6/0x1d0\n btrfs_recover_log_trees+0x1da/0x360\n ? replay_one_extent+0x7b0/0x7b0\n open_ctree+0x1486/0x1720\n btrfs_mount_root.cold+0x12/0xea\n ? __kmalloc_track_caller+0x12f/0x240\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n vfs_kern_mount.part.0+0x71/0xb0\n btrfs_mount+0x10d/0x380\n ? vfs_parse_fs_string+0x4d/0x90\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n path_mount+0x433/0xa10\n __x64_sys_mount+0xe3/0x120\n do_syscall_64+0x3d/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nWe can get -EIO or any number of legitimate errors from\nbtrfs_search_slot(), panicing here is not the appropriate response. The\nerror path for this code handles errors properly, simply return the\nerror."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/tree-log.c"], "versions": [{"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "76bfd8ac20bebeae599452a03dfc5724c0475dcf", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "e934c4ee17b33bafb0444f2f9766cda7166d3c40", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "0eaf383c6a4a83c09f60fd07a1bea9f1a9181611", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "0ed102453aa1cd12fefde8f6b60b9519b0b1f003", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "7e13db503918820e6333811cdc6f151dcea5090a", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "b545442133580dcb2f2496133bf850824d41255c", "status": "affected", "versionType": "git"}, {"version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d", "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/btrfs/tree-log.c"], "versions": [{"version": "2.6.29", "status": "affected"}, {"version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver"}, {"version": "4.4.271", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver"}, 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"versionEndExcluding": "5.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/76bfd8ac20bebeae599452a03dfc5724c0475dcf"}, {"url": "https://git.kernel.org/stable/c/e934c4ee17b33bafb0444f2f9766cda7166d3c40"}, {"url": "https://git.kernel.org/stable/c/0eaf383c6a4a83c09f60fd07a1bea9f1a9181611"}, {"url": "https://git.kernel.org/stable/c/6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa"}, {"url": "https://git.kernel.org/stable/c/0ed102453aa1cd12fefde8f6b60b9519b0b1f003"}, {"url": "https://git.kernel.org/stable/c/7e13db503918820e6333811cdc6f151dcea5090a"}, {"url": "https://git.kernel.org/stable/c/b545442133580dcb2f2496133bf850824d41255c"}, {"url": "https://git.kernel.org/stable/c/91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d"}], "title": "btrfs: do not BUG_ON in link_to_fixup_dir", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47145", "role": "CISA Coordinator", "options": 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"e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "e934c4ee17b33bafb0444f2f9766cda7166d3c40", "versionType": "git"}, {"status": "affected", "version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "0eaf383c6a4a83c09f60fd07a1bea9f1a9181611", "versionType": "git"}, {"status": "affected", "version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa", "versionType": "git"}, {"status": "affected", "version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "0ed102453aa1cd12fefde8f6b60b9519b0b1f003", "versionType": "git"}, {"status": "affected", "version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "7e13db503918820e6333811cdc6f151dcea5090a", "versionType": "git"}, {"status": "affected", "version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "b545442133580dcb2f2496133bf850824d41255c", "versionType": "git"}, {"status": "affected", "version": "e02119d5a7b4396c5a872582fddc8bd6d305a70a", "lessThan": "91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d", "versionType": "git"}], "programFiles": ["fs/btrfs/tree-log.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.29", "versionType": "semver"}, {"status": "unaffected", "version": "4.4.271", "versionType": "semver", "lessThanOrEqual": "4.4.*"}, {"status": "unaffected", "version": "4.9.271", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.235", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.193", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.124", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.42", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.12.9", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/tree-log.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/76bfd8ac20bebeae599452a03dfc5724c0475dcf"}, {"url": "https://git.kernel.org/stable/c/e934c4ee17b33bafb0444f2f9766cda7166d3c40"}, {"url": "https://git.kernel.org/stable/c/0eaf383c6a4a83c09f60fd07a1bea9f1a9181611"}, {"url": "https://git.kernel.org/stable/c/6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa"}, {"url": "https://git.kernel.org/stable/c/0ed102453aa1cd12fefde8f6b60b9519b0b1f003"}, {"url": "https://git.kernel.org/stable/c/7e13db503918820e6333811cdc6f151dcea5090a"}, {"url": "https://git.kernel.org/stable/c/b545442133580dcb2f2496133bf850824d41255c"}, {"url": "https://git.kernel.org/stable/c/91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: do not BUG_ON in link_to_fixup_dir\n\nWhile doing error injection testing I got the following panic\n\n kernel BUG at fs/btrfs/tree-log.c:1862!\n invalid opcode: 0000 [#1] SMP NOPTI\n CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014\n RIP: 0010:link_to_fixup_dir+0xd5/0xe0\n RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216\n RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0\n RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000\n RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001\n R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800\n R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065\n FS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0\n Call Trace:\n replay_one_buffer+0x409/0x470\n ? btree_read_extent_buffer_pages+0xd0/0x110\n walk_up_log_tree+0x157/0x1e0\n walk_log_tree+0xa6/0x1d0\n btrfs_recover_log_trees+0x1da/0x360\n ? replay_one_extent+0x7b0/0x7b0\n open_ctree+0x1486/0x1720\n btrfs_mount_root.cold+0x12/0xea\n ? __kmalloc_track_caller+0x12f/0x240\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n vfs_kern_mount.part.0+0x71/0xb0\n btrfs_mount+0x10d/0x380\n ? vfs_parse_fs_string+0x4d/0x90\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n path_mount+0x433/0xa10\n __x64_sys_mount+0xe3/0x120\n do_syscall_64+0x3d/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nWe can get -EIO or any number of legitimate errors from\nbtrfs_search_slot(), panicing here is not the appropriate response. The\nerror path for this code handles errors properly, simply return the\nerror."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.4.271", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.271", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.235", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.193", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.124", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.42", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.9", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13", "versionStartIncluding": "2.6.29"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-18T11:35:43.006Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47145", "state": "PUBLISHED", "dateUpdated": "2025-12-18T11:35:43.006Z", "dateReserved": "2024-03-04T18:12:48.845Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-25T09:07:42.384Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"4.9.271", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.235", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.193", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.124", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.42", "versionType": "semver"}, {"lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3B637FF8-3372-4BEA-89EE-EC94A37C4E6B", "versionEndExcluding": "4.4.271", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", 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"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2C8A1D02-81A7-44E5-ACFD-CC6A6694F930", "versionEndExcluding": "5.12.9", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*", "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*", "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: do not BUG_ON in link_to_fixup_dir\n\nWhile doing error injection testing I got the following panic\n\n kernel BUG at fs/btrfs/tree-log.c:1862!\n invalid opcode: 0000 [#1] SMP NOPTI\n CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014\n RIP: 0010:link_to_fixup_dir+0xd5/0xe0\n RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216\n RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0\n RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000\n RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001\n R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800\n R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065\n FS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0\n Call Trace:\n replay_one_buffer+0x409/0x470\n ? btree_read_extent_buffer_pages+0xd0/0x110\n walk_up_log_tree+0x157/0x1e0\n walk_log_tree+0xa6/0x1d0\n btrfs_recover_log_trees+0x1da/0x360\n ? replay_one_extent+0x7b0/0x7b0\n open_ctree+0x1486/0x1720\n btrfs_mount_root.cold+0x12/0xea\n ? __kmalloc_track_caller+0x12f/0x240\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n vfs_kern_mount.part.0+0x71/0xb0\n btrfs_mount+0x10d/0x380\n ? vfs_parse_fs_string+0x4d/0x90\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n path_mount+0x433/0xa10\n __x64_sys_mount+0xe3/0x120\n do_syscall_64+0x3d/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nWe can get -EIO or any number of legitimate errors from\nbtrfs_search_slot(), panicing here is not the appropriate response. The\nerror path for this code handles errors properly, simply return the\nerror."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: btrfs: no haga ERROR_ON en link_to_fixup_dir Mientras realizaba pruebas de inyecci\u00f3n de errores, obtuve el siguiente ERROR de p\u00e1nico en el kernel en fs/btrfs/tree-log.c:1862. c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] SMP NOPTI CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305 Nombre de hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 01/04/2014 RIP: 0010:link_to_fixup_dir+0xd5/0xe0 RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216 RAX: fffffffffffffffb RBX: 00000000ffffffffb RCX: ffff8f595287faf0 RDX : ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000 RBP: ffff8f5953af9450 R08: 00000000000000019 R09: 0000000000000001 R10 : 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800 R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065 FS: 00007 fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc5287f47c0 CR3: 0 00000011275e002 CR4: 0000000000370ee0 Seguimiento de llamadas: replay_one_buffer+0x409/0x470? btree_read_extent_buffer_pages+0xd0/0x110 walk_up_log_tree+0x157/0x1e0 walk_log_tree+0xa6/0x1d0 btrfs_recover_log_trees+0x1da/0x360 ? replay_one_extent+0x7b0/0x7b0 open_ctree+0x1486/0x1720 btrfs_mount_root.cold+0x12/0xea ? __kmalloc_track_caller+0x12f/0x240 Legacy_get_tree+0x24/0x40 vfs_get_tree+0x22/0xb0 vfs_kern_mount.part.0+0x71/0xb0 btrfs_mount+0x10d/0x380 ? vfs_parse_fs_string+0x4d/0x90 Legacy_get_tree+0x24/0x40 vfs_get_tree+0x22/0xb0 path_mount+0x433/0xa10 __x64_sys_mount+0xe3/0x120 do_syscall_64+0x3d/0x80 Entry_SYSCALL_64_after_hwframe+0 x44/0xae Podemos obtener -EIO o cualquier n\u00famero de errores leg\u00edtimos de btrfs_search_slot() , entrar en p\u00e1nico aqu\u00ed no es la respuesta adecuada. La ruta de error para este c\u00f3digo maneja los errores correctamente, simplemente devuelve el error."}], "id": "CVE-2021-47145", "lastModified": "2026-06-17T04:16:38.917", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47145", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-03-25T14:12:43.029638Z", "version": "2.0.3"}}]}, "published": "2024-03-25T09:15:08.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0eaf383c6a4a83c09f60fd07a1bea9f1a9181611"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ed102453aa1cd12fefde8f6b60b9519b0b1f003"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/76bfd8ac20bebeae599452a03dfc5724c0475dcf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e13db503918820e6333811cdc6f151dcea5090a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b545442133580dcb2f2496133bf850824d41255c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e934c4ee17b33bafb0444f2f9766cda7166d3c40"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0eaf383c6a4a83c09f60fd07a1bea9f1a9181611"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ed102453aa1cd12fefde8f6b60b9519b0b1f003"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/76bfd8ac20bebeae599452a03dfc5724c0475dcf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e13db503918820e6333811cdc6f151dcea5090a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b545442133580dcb2f2496133bf850824d41255c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e934c4ee17b33bafb0444f2f9766cda7166d3c40"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: do not BUG_ON in link_to_fixup_dir", "id": "2271477", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2271477"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-460", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: do not BUG_ON in link_to_fixup_dir\nWhile doing error injection testing I got the following panic\nkernel BUG at fs/btrfs/tree-log.c:1862!\ninvalid opcode: 0000 [#1] SMP NOPTI\nCPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014\nRIP: 0010:link_to_fixup_dir+0xd5/0xe0\nRSP: 0018:ffffb5800180fa30 EFLAGS: 00010216\nRAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0\nRDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000\nRBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001\nR10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800\nR13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065\nFS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0\nCall Trace:\nreplay_one_buffer+0x409/0x470\n? btree_read_extent_buffer_pages+0xd0/0x110\nwalk_up_log_tree+0x157/0x1e0\nwalk_log_tree+0xa6/0x1d0\nbtrfs_recover_log_trees+0x1da/0x360\n? replay_one_extent+0x7b0/0x7b0\nopen_ctree+0x1486/0x1720\nbtrfs_mount_root.cold+0x12/0xea\n? __kmalloc_track_caller+0x12f/0x240\nlegacy_get_tree+0x24/0x40\nvfs_get_tree+0x22/0xb0\nvfs_kern_mount.part.0+0x71/0xb0\nbtrfs_mount+0x10d/0x380\n? vfs_parse_fs_string+0x4d/0x90\nlegacy_get_tree+0x24/0x40\nvfs_get_tree+0x22/0xb0\npath_mount+0x433/0xa10\n__x64_sys_mount+0xe3/0x120\ndo_syscall_64+0x3d/0x80\nentry_SYSCALL_64_after_hwframe+0x44/0xae\nWe can get -EIO or any number of legitimate errors from\nbtrfs_search_slot(), panicing here is not the appropriate response. The\nerror path for this code handles errors properly, simply return the\nerror."], "name": "CVE-2021-47145", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47145\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47145\nhttps://lore.kernel.org/linux-cve-announce/2024032558-CVE-2021-47145-e536@gregkh/T"], "threat_severity": "Low"}

{}