cve-2024-49957
Vulnerability from cvelistv5
Published
2024-10-21 18:02
Modified
2024-12-19 09:30
Severity ?
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/387bf565cc03e2e8c720b8b4798efea4aacb6962Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5784d9fcfd43bd853654bb80c87ef293b9e8e80aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/703b2c7e0798d263154dc8593dc2345f75dc077f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82dfdd1e31e774578f76ce6dc90c834f96403a0fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/86a89e75e9e4dfa768b97db466ad6bedf2e7ea5bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf605ae98dab5c15c5b631d4d7f88898cb41b649Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f60e94a83db799bde625ac8671a5b4a6354e7120Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd89d92c1140cee8f59de336cb37fa65e359c123
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff55291fb36779819211b596da703389135f5b05Patch
Impacted products
Vendor Product Version
Linux Linux Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
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   Linux Linux Version: 2.6.32
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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. 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    "vulnrichment": {
      "containers": "{\"adp\": [{\"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\": \"f6f50e28f0cb\", \"lessThan\": \"bf605ae98dab\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb\", \"lessThan\": \"ff55291fb367\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb\", \"lessThan\": \"82dfdd1e31e7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb\", \"lessThan\": \"86a89e75e9e4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb\", \"lessThan\": \"f60e94a83db7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb\", \"lessThan\": \"387bf565cc03\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f6f50e28f0cb\", \"lessThan\": \"5784d9fcfd43\", \"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\": \"custom\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12-rc1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/ocfs2/journal.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"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-c9c4e1df01b2\"}, \"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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-10-21T18:02:11.046Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49957\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-22T13:38:48.252Z\", \"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": "5.1"
    }
  }
}


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