cve-2024-40952
Vulnerability from cvelistv5
Published
2024-07-12 12:31
Modified
2025-05-04 09:18
Severity ?
Summary
ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0550ad87711f815b3d73e487ec58ca7d8f56edbcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362ddPatch
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()\n\nbdev-\u003ebd_super has been removed and commit 8887b94d9322 change the usage\nfrom bdev-\u003ebd_super to b_assoc_map-\u003ehost-\u003ei_sb.  This introduces the\nfollowing NULL pointer dereference in ocfs2_journal_dirty() since\nb_assoc_map is still not initialized.  This can be easily reproduced by\nrunning xfstests generic/186, which simulate no more credits.\n\n[  134.351592] BUG: kernel NULL pointer dereference, address: 0000000000000000\n...\n[  134.355341] RIP: 0010:ocfs2_journal_dirty+0x14f/0x160 [ocfs2]\n...\n[  134.365071] Call Trace:\n[  134.365312]  \u003cTASK\u003e\n[  134.365524]  ? __die_body+0x1e/0x60\n[  134.365868]  ? page_fault_oops+0x13d/0x4f0\n[  134.366265]  ? __pfx_bit_wait_io+0x10/0x10\n[  134.366659]  ? schedule+0x27/0xb0\n[  134.366981]  ? exc_page_fault+0x6a/0x140\n[  134.367356]  ? asm_exc_page_fault+0x26/0x30\n[  134.367762]  ? ocfs2_journal_dirty+0x14f/0x160 [ocfs2]\n[  134.368305]  ? ocfs2_journal_dirty+0x13d/0x160 [ocfs2]\n[  134.368837]  ocfs2_create_new_meta_bhs.isra.51+0x139/0x2e0 [ocfs2]\n[  134.369454]  ocfs2_grow_tree+0x688/0x8a0 [ocfs2]\n[  134.369927]  ocfs2_split_and_insert.isra.67+0x35c/0x4a0 [ocfs2]\n[  134.370521]  ocfs2_split_extent+0x314/0x4d0 [ocfs2]\n[  134.371019]  ocfs2_change_extent_flag+0x174/0x410 [ocfs2]\n[  134.371566]  ocfs2_add_refcount_flag+0x3fa/0x630 [ocfs2]\n[  134.372117]  ocfs2_reflink_remap_extent+0x21b/0x4c0 [ocfs2]\n[  134.372994]  ? inode_update_timestamps+0x4a/0x120\n[  134.373692]  ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2]\n[  134.374545]  ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2]\n[  134.375393]  ocfs2_reflink_remap_blocks+0xe4/0x4e0 [ocfs2]\n[  134.376197]  ocfs2_remap_file_range+0x1de/0x390 [ocfs2]\n[  134.376971]  ? security_file_permission+0x29/0x50\n[  134.377644]  vfs_clone_file_range+0xfe/0x320\n[  134.378268]  ioctl_file_clone+0x45/0xa0\n[  134.378853]  do_vfs_ioctl+0x457/0x990\n[  134.379422]  __x64_sys_ioctl+0x6e/0xd0\n[  134.379987]  do_syscall_64+0x5d/0x170\n[  134.380550]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  134.381231] RIP: 0033:0x7fa4926397cb\n[  134.381786] Code: 73 01 c3 48 8b 0d bd 56 38 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8d 56 38 00 f7 d8 64 89 01 48\n[  134.383930] RSP: 002b:00007ffc2b39f7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n[  134.384854] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fa4926397cb\n[  134.385734] RDX: 00007ffc2b39f7f0 RSI: 000000004020940d RDI: 0000000000000003\n[  134.386606] RBP: 0000000000000000 R08: 00111a82a4f015bb R09: 00007fa494221000\n[  134.387476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\n[  134.388342] R13: 0000000000f10000 R14: 0000558e844e2ac8 R15: 0000000000f10000\n[  134.389207]  \u003c/TASK\u003e\n\nFix it by only aborting transaction and journal in ocfs2_journal_dirty()\nnow, and leave ocfs2_abort() later when detecting an aborted handle,\ne.g. start next transaction. Also log the handle details in this case."
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          "url": "https://git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362dd"
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        {
          "url": "https://git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822"
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      "title": "ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-40952",
    "datePublished": "2024-07-12T12:31:56.160Z",
    "dateReserved": "2024-07-12T12:17:45.592Z",
    "dateUpdated": "2025-05-04T09:18:39.596Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40952\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:17.477\",\"lastModified\":\"2024-08-21T16:50:34.377\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()\\n\\nbdev-\u003ebd_super has been removed and commit 8887b94d9322 change the usage\\nfrom bdev-\u003ebd_super to b_assoc_map-\u003ehost-\u003ei_sb.  This introduces the\\nfollowing NULL pointer dereference in ocfs2_journal_dirty() since\\nb_assoc_map is still not initialized.  This can be easily reproduced by\\nrunning xfstests generic/186, which simulate no more credits.\\n\\n[  134.351592] BUG: kernel NULL pointer dereference, address: 0000000000000000\\n...\\n[  134.355341] RIP: 0010:ocfs2_journal_dirty+0x14f/0x160 [ocfs2]\\n...\\n[  134.365071] Call Trace:\\n[  134.365312]  \u003cTASK\u003e\\n[  134.365524]  ? __die_body+0x1e/0x60\\n[  134.365868]  ? page_fault_oops+0x13d/0x4f0\\n[  134.366265]  ? __pfx_bit_wait_io+0x10/0x10\\n[  134.366659]  ? schedule+0x27/0xb0\\n[  134.366981]  ? exc_page_fault+0x6a/0x140\\n[  134.367356]  ? asm_exc_page_fault+0x26/0x30\\n[  134.367762]  ? ocfs2_journal_dirty+0x14f/0x160 [ocfs2]\\n[  134.368305]  ? ocfs2_journal_dirty+0x13d/0x160 [ocfs2]\\n[  134.368837]  ocfs2_create_new_meta_bhs.isra.51+0x139/0x2e0 [ocfs2]\\n[  134.369454]  ocfs2_grow_tree+0x688/0x8a0 [ocfs2]\\n[  134.369927]  ocfs2_split_and_insert.isra.67+0x35c/0x4a0 [ocfs2]\\n[  134.370521]  ocfs2_split_extent+0x314/0x4d0 [ocfs2]\\n[  134.371019]  ocfs2_change_extent_flag+0x174/0x410 [ocfs2]\\n[  134.371566]  ocfs2_add_refcount_flag+0x3fa/0x630 [ocfs2]\\n[  134.372117]  ocfs2_reflink_remap_extent+0x21b/0x4c0 [ocfs2]\\n[  134.372994]  ? inode_update_timestamps+0x4a/0x120\\n[  134.373692]  ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2]\\n[  134.374545]  ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2]\\n[  134.375393]  ocfs2_reflink_remap_blocks+0xe4/0x4e0 [ocfs2]\\n[  134.376197]  ocfs2_remap_file_range+0x1de/0x390 [ocfs2]\\n[  134.376971]  ? security_file_permission+0x29/0x50\\n[  134.377644]  vfs_clone_file_range+0xfe/0x320\\n[  134.378268]  ioctl_file_clone+0x45/0xa0\\n[  134.378853]  do_vfs_ioctl+0x457/0x990\\n[  134.379422]  __x64_sys_ioctl+0x6e/0xd0\\n[  134.379987]  do_syscall_64+0x5d/0x170\\n[  134.380550]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n[  134.381231] RIP: 0033:0x7fa4926397cb\\n[  134.381786] Code: 73 01 c3 48 8b 0d bd 56 38 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8d 56 38 00 f7 d8 64 89 01 48\\n[  134.383930] RSP: 002b:00007ffc2b39f7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\n[  134.384854] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fa4926397cb\\n[  134.385734] RDX: 00007ffc2b39f7f0 RSI: 000000004020940d RDI: 0000000000000003\\n[  134.386606] RBP: 0000000000000000 R08: 00111a82a4f015bb R09: 00007fa494221000\\n[  134.387476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\n[  134.388342] R13: 0000000000f10000 R14: 0000558e844e2ac8 R15: 0000000000f10000\\n[  134.389207]  \u003c/TASK\u003e\\n\\nFix it by only aborting transaction and journal in ocfs2_journal_dirty()\\nnow, and leave ocfs2_abort() later when detecting an aborted handle,\\ne.g. start next transaction. Also log the handle details in this case.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ocfs2: corrigi\u00f3 la desreferencia del puntero NULL en ocfs2_journal_dirty() bdev-\u0026gt;bd_super se elimin\u00f3 y commit 8887b94d9322 cambi\u00f3 el uso de bdev-\u0026gt;bd_super a b_assoc_map-\u0026gt;host-\u0026gt;i_sb. Esto introduce la siguiente desreferencia del puntero NULL en ocfs2_journal_dirty() ya que b_assoc_map a\u00fan no est\u00e1 inicializado. Esto se puede reproducir f\u00e1cilmente ejecutando xfstests generic/186, que no simula m\u00e1s cr\u00e9ditos. [134.351592] ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000000... [134.355341] RIP: 0010:ocfs2_journal_dirty+0x14f/0x160 [ocfs2]... [134.365071] Seguimiento de llamadas: [134.3653 12]  [134.365524] ? __die_body+0x1e/0x60 [ 134.365868] ? page_fault_oops+0x13d/0x4f0 [134.366265]? __pfx_bit_wait_io+0x10/0x10 [134.366659]? horario+0x27/0xb0 [ 134.366981] ? exc_page_fault+0x6a/0x140 [134.367356]? asm_exc_page_fault+0x26/0x30 [134.367762]? ocfs2_journal_dirty+0x14f/0x160 [ocfs2] [ 134.368305] ? ocfs2_journal_dirty+0x13d/0x160 [ocfs2] [ 134.368837] ocfs2_create_new_meta_bhs.isra.51+0x139/0x2e0 [ocfs2] [ 134.369454] ocfs2_grow_tree+0x688/0x8a0 [ocfs2] 134.369927] ocfs2_split_and_insert.isra.67+0x35c/0x4a0 [ocfs2] [ 134.370521] ocfs2_split_extent+0x314/0x4d0 [ocfs2] [ 134.371019] ocfs2_change_extent_flag+0x174/0x410 [ocfs2] [ 134.371566] ocfs2_add_refcount_flag+0x3fa/0x630 ocfs2] [134.372117] ocfs2_reflink_remap_extent+0x21b/0x4c0 [ocfs2] [134.372994]? inode_update_timestamps+0x4a/0x120 [134.373692]? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2] [ 134.374545] ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2] [ 134.375393] ocfs2_reflink_remap_blocks+0xe4/0x4e0 [ocfs2] [ 134.376197] ocfs2_remap_file_range+0x1de/0x390 [ocfs2] [ 13 4.376971] ? permiso_archivo_seguridad+0x29/0x50 [ 134.377644] vfs_clone_file_range+0xfe/0x320 [ 134.378268] ioctl_file_clone+0x45/0xa0 [ 134.378853] do_vfs_ioctl+0x457/0x990 [ 134.379 422] __x64_sys_ioctl+0x6e/0xd0 [ 134.379987] do_syscall_64+0x5d/0x170 [ 134.380550] entrada_SYSCALL_64_after_hwframe+ 0x76/0x7e [ 134.381231] RIP: 0033:0x7fa4926397cb [ 134.381786] C\u00f3digo: 73 01 c3 48 8b 0d bd 56 38 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f f84 00 00 00 00 00 90 f3 0f 1e fa b8 10 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8d 56 38 00 f7 d8 64 89 01 48 [ 134.383930] RSP: 002b:00007ffc2b39f7b8 : 00000246 ORIG_RAX: 00000000000000010 [ 134.384854] RAX : ffffffffffffffda RBX: 0000000000000004 RCX: 00007fa4926397cb [ 134.385734] RDX: 00007ffc2b39f7f0 RSI: 000000004020940d RDI: 0000000000000003 [ 134.386606] RBP: 0000000000000000 R08: 00111a82a4f015bb R09: 00007fa494221000 [ 134.387476] R10: 0000000000000000 R11: 0000000000000 246 R12: 0000000000000000 [ 134.388342] R13: 0000000000f10000 R14: 0000558e844e2ac8 R15: 0000000000f10000 [ 134.389207]  Solucionelo abortando solo la transacci\u00f3n y el diario en ocfs2_journal_dirty() ahora, y deje ocfs2_abort() m\u00e1s tarde cuando detecte un identificador abortado, por ejemplo, iniciar la siguiente transacci\u00f3n. En este caso, registre tambi\u00e9n los detalles del identificador.\"}],\"metrics\":{\"cvssMetricV31\":[{\"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:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.36\",\"matchCriteriaId\":\"7811AF31-E4C8-4CC1-8D27-717621D639B8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.7\",\"matchCriteriaId\":\"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"331C2F14-12C7-45D5-893D-8C52EE38EA10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3173713D-909A-4DD3-9DD4-1E171EB057EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"79F18AFA-40F7-43F0-BA30-7BDB65F918B9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0550ad87711f815b3d73e487ec58ca7d8f56edbc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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Tags
Taxonomy of the tags.




  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.