cve-2024-50230
Vulnerability from cvelistv5
Published
2024-11-09 10:14
Modified
2024-12-19 09:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug due to missing clearing of checked flag Syzbot reported that in directory operations after nilfs2 detects filesystem corruption and degrades to read-only, __block_write_begin_int(), which is called to prepare block writes, may fail the BUG_ON check for accesses exceeding the folio/page size, triggering a kernel bug. This was found to be because the "checked" flag of a page/folio was not cleared when it was discarded by nilfs2's own routine, which causes the sanity check of directory entries to be skipped when the directory page/folio is reloaded. So, fix that. This was necessary when the use of nilfs2's own page discard routine was applied to more than just metadata files.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41e192ad2779cae0102879612dfe46726e4396aaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56c6171932a7fb267ac6cb4ff8759b93ee1d0e2ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64afad73e4623308d8943645e5631f2c7a2d7971Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/994b2fa13a6c9cf3feca93090a9c337d48e3d60dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aa0cee46c5d3fd9a39575a4c8a4f65f25f095b89Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd0cdb51b15203fa27d4b714be83b7dfffa0b752Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f05dbebb8ee34882505d53d83af7d18f28a49248Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2f1fa446676c21edb777e6d2bc4fa8f956fab68Patch
Impacted products
Vendor Product Version
Linux Linux Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
Version: 8c26c4e2694a163d525976e804d81cd955bbb40c
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   Linux Linux Version: 3.10
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/page.c"
          ],
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "3.10"
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              "version": "0",
              "versionType": "semver"
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              "version": "4.19.323",
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              "version": "6.12",
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix kernel bug due to missing clearing of checked flag\n\nSyzbot reported that in directory operations after nilfs2 detects\nfilesystem corruption and degrades to read-only,\n__block_write_begin_int(), which is called to prepare block writes, may\nfail the BUG_ON check for accesses exceeding the folio/page size,\ntriggering a kernel bug.\n\nThis was found to be because the \"checked\" flag of a page/folio was not\ncleared when it was discarded by nilfs2\u0027s own routine, which causes the\nsanity check of directory entries to be skipped when the directory\npage/folio is reloaded.  So, fix that.\n\nThis was necessary when the use of nilfs2\u0027s own page discard routine was\napplied to more than just metadata files."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:35:58.179Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/41e192ad2779cae0102879612dfe46726e4396aa"
        }
      ],
      "title": "nilfs2: fix kernel bug due to missing clearing of checked flag",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50230",
    "datePublished": "2024-11-09T10:14:40.576Z",
    "dateReserved": "2024-10-21T19:36:19.973Z",
    "dateUpdated": "2024-12-19T09:35:58.179Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
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So, fix that.\\n\\nThis was necessary when the use of nilfs2\u0027s own page discard routine was\\napplied to more than just metadata files.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrige un error del kernel debido a la falta de limpieza del indicador marcado Syzbot inform\u00f3 que en las operaciones de directorio despu\u00e9s de que nilfs2 detecta corrupci\u00f3n del sistema de archivos y se degrada a solo lectura, __block_write_begin_int(), que se llama para preparar escrituras en bloque, puede fallar la verificaci\u00f3n BUG_ON para accesos que excedan el tama\u00f1o de folio/p\u00e1gina, lo que desencadena un error del kernel. Se descubri\u00f3 que esto se deb\u00eda a que el indicador \\\"marcado\\\" de una p\u00e1gina/folio no se borraba cuando era descartado por la propia rutina de nilfs2, lo que hace que se omita la verificaci\u00f3n de cordura de las entradas del directorio cuando se vuelve a cargar la p\u00e1gina/folio del directorio. Entonces, arreglen eso. Esto era necesario cuando el uso de la propia rutina de descarte de p\u00e1gina de nilfs2 se aplicaba a m\u00e1s que solo archivos de metadatos.\"}],\"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: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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10\",\"versionEndExcluding\":\"4.19.323\",\"matchCriteriaId\":\"4275189E-11C2-4607-92FC-0606E12A465F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.285\",\"matchCriteriaId\":\"B5A89369-320F-47FC-8695-56F61F87E4C0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.229\",\"matchCriteriaId\":\"1A03CABE-9B43-4E7F-951F-10DEEADAA426\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.171\",\"matchCriteriaId\":\"2BE18665-48ED-417A-90AA-41F3AC0B4E9A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.116\",\"matchCriteriaId\":\"43EFDC15-E4D4-4F1E-B70D-62F0854BFDF3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.60\",\"matchCriteriaId\":\"75088E5E-2400-4D20-915F-7A65C55D9CCD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.7\",\"matchCriteriaId\":\"E96F53A4-5E87-4A70-BD9A-BC327828D57F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/41e192ad2779cae0102879612dfe46726e4396aa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/56c6171932a7fb267ac6cb4ff8759b93ee1d0e2e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/64afad73e4623308d8943645e5631f2c7a2d7971\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/994b2fa13a6c9cf3feca93090a9c337d48e3d60d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aa0cee46c5d3fd9a39575a4c8a4f65f25f095b89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cd0cdb51b15203fa27d4b714be83b7dfffa0b752\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f05dbebb8ee34882505d53d83af7d18f28a49248\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f2f1fa446676c21edb777e6d2bc4fa8f956fab68\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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