CVE-2024-49957 (GCVE-0-2024-49957)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-05-11 20:42
VLAI?
Title
ocfs2: fix null-ptr-deref when journal load failed.
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix null-ptr-deref when journal load failed. During the mounting process, if journal_reset() fails because of too short journal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer. Subsequently, ocfs2_journal_shutdown() calls jbd2_journal_flush()->jbd2_cleanup_journal_tail()-> __jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail() ->lock_buffer(journal->j_sb_buffer), resulting in a null-pointer dereference error. To resolve this issue, we should check the JBD2_LOADED flag to ensure the journal was properly loaded. Additionally, use journal instead of osb->journal directly to simplify the code.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < fd89d92c1140cee8f59de336cb37fa65e359c123 (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < 703b2c7e0798d263154dc8593dc2345f75dc077f (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < bf605ae98dab5c15c5b631d4d7f88898cb41b649 (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < ff55291fb36779819211b596da703389135f5b05 (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < 82dfdd1e31e774578f76ce6dc90c834f96403a0f (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < 86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < f60e94a83db799bde625ac8671a5b4a6354e7120 (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < 387bf565cc03e2e8c720b8b4798efea4aacb6962 (git)
Affected: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1 , < 5784d9fcfd43bd853654bb80c87ef293b9e8e80a (git)
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Linux Linux Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-49957\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T18:15:16.950\",\"lastModified\":\"2025-11-03T23:16:34.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nocfs2: fix null-ptr-deref when journal load failed.\\n\\nDuring the mounting process, if journal_reset() fails because of too short\\njournal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer. \\nSubsequently, ocfs2_journal_shutdown() calls\\njbd2_journal_flush()-\u003ejbd2_cleanup_journal_tail()-\u003e\\n__jbd2_update_log_tail()-\u003ejbd2_journal_update_sb_log_tail()\\n-\u003elock_buffer(journal-\u003ej_sb_buffer), resulting in a null-pointer\\ndereference error.\\n\\nTo resolve this issue, we should check the JBD2_LOADED flag to ensure the\\njournal was properly loaded.  Additionally, use journal instead of\\nosb-\u003ejournal directly to simplify the code.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ocfs2: se corrige el error null-ptr-deref cuando falla la carga del diario. Durante el proceso de montaje, si journal_reset() falla debido a que el diario es demasiado corto, entonces provoca que jbd2_journal_load() falle con j_sb_buffer NULL. Posteriormente, ocfs2_journal_shutdown() llama a jbd2_journal_flush()-\u0026gt;jbd2_cleanup_journal_tail()-\u0026gt; __jbd2_update_log_tail()-\u0026gt;jbd2_journal_update_sb_log_tail() -\u0026gt;lock_buffer(journal-\u0026gt;j_sb_buffer), lo que da como resultado un error de desreferencia de puntero nulo. Para resolver este problema, debemos verificar el indicador JBD2_LOADED para asegurarnos de que el diario se carg\u00f3 correctamente. Adem\u00e1s, use journal en lugar de osb-\u0026gt;journal directamente para simplificar el c\u00f3digo.\"}],\"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\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"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\":\"2.6.32\",\"versionEndExcluding\":\"5.10.227\",\"matchCriteriaId\":\"BF903132-A3AF-4A91-AFA9-3C8A9C378FAE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.168\",\"matchCriteriaId\":\"4D51C05D-455B-4D8D-89E7-A58E140B864C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.113\",\"matchCriteriaId\":\"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.55\",\"matchCriteriaId\":\"E90B9576-56C4-47BC-AAB0-C5B2D438F5D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.14\",\"matchCriteriaId\":\"4C16BCE0-FFA0-4599-BE0A-1FD65101C021\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.3\",\"matchCriteriaId\":\"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/387bf565cc03e2e8c720b8b4798efea4aacb6962\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5784d9fcfd43bd853654bb80c87ef293b9e8e80a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/703b2c7e0798d263154dc8593dc2345f75dc077f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/82dfdd1e31e774578f76ce6dc90c834f96403a0f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bf605ae98dab5c15c5b631d4d7f88898cb41b649\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f60e94a83db799bde625ac8671a5b4a6354e7120\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fd89d92c1140cee8f59de336cb37fa65e359c123\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff55291fb36779819211b596da703389135f5b05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:23:36.709Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49957\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:35:36.575300Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:35:39.743Z\"}}], \"cna\": {\"title\": \"ocfs2: fix null-ptr-deref when journal load failed.\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"fd89d92c1140cee8f59de336cb37fa65e359c123\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"703b2c7e0798d263154dc8593dc2345f75dc077f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"bf605ae98dab5c15c5b631d4d7f88898cb41b649\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"ff55291fb36779819211b596da703389135f5b05\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"82dfdd1e31e774578f76ce6dc90c834f96403a0f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"f60e94a83db799bde625ac8671a5b4a6354e7120\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"387bf565cc03e2e8c720b8b4798efea4aacb6962\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb8d7bcdfaacc83129f005dede11b1\", \"lessThan\": \"5784d9fcfd43bd853654bb80c87ef293b9e8e80a\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/ocfs2/journal.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.32\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.32\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.323\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/ocfs2/journal.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/fd89d92c1140cee8f59de336cb37fa65e359c123\"}, {\"url\": \"https://git.kernel.org/stable/c/703b2c7e0798d263154dc8593dc2345f75dc077f\"}, {\"url\": \"https://git.kernel.org/stable/c/bf605ae98dab5c15c5b631d4d7f88898cb41b649\"}, {\"url\": \"https://git.kernel.org/stable/c/ff55291fb36779819211b596da703389135f5b05\"}, {\"url\": \"https://git.kernel.org/stable/c/82dfdd1e31e774578f76ce6dc90c834f96403a0f\"}, {\"url\": \"https://git.kernel.org/stable/c/86a89e75e9e4dfa768b97db466ad6bedf2e7ea5b\"}, {\"url\": \"https://git.kernel.org/stable/c/f60e94a83db799bde625ac8671a5b4a6354e7120\"}, {\"url\": \"https://git.kernel.org/stable/c/387bf565cc03e2e8c720b8b4798efea4aacb6962\"}, {\"url\": \"https://git.kernel.org/stable/c/5784d9fcfd43bd853654bb80c87ef293b9e8e80a\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nocfs2: fix null-ptr-deref when journal load failed.\\n\\nDuring the mounting process, if journal_reset() fails because of too short\\njournal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer. \\nSubsequently, ocfs2_journal_shutdown() calls\\njbd2_journal_flush()-\u003ejbd2_cleanup_journal_tail()-\u003e\\n__jbd2_update_log_tail()-\u003ejbd2_journal_update_sb_log_tail()\\n-\u003elock_buffer(journal-\u003ej_sb_buffer), resulting in a null-pointer\\ndereference error.\\n\\nTo resolve this issue, we should check the JBD2_LOADED flag to ensure the\\njournal was properly loaded.  Additionally, use journal instead of\\nosb-\u003ejournal directly to simplify the code.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.55\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.14\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.3\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"2.6.32\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:42:19.684Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49957\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:23:36.709Z\", \"dateReserved\": \"2024-10-21T12:17:06.048Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:02:11.046Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.