fkie_cve-2024-39469
Vulnerability from fkie_nvd
Published
2024-06-25 15:15
Modified
2025-11-03 22:17
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors The error handling in nilfs_empty_dir() when a directory folio/page read fails is incorrect, as in the old ext2 implementation, and if the folio/page cannot be read or nilfs_check_folio() fails, it will falsely determine the directory as empty and corrupt the file system. In addition, since nilfs_empty_dir() does not immediately return on a failed folio/page read, but continues to loop, this can cause a long loop with I/O if i_size of the directory's inode is also corrupted, causing the log writer thread to wait and hang, as reported by syzbot. Fix these issues by making nilfs_empty_dir() immediately return a false value (0) if it fails to get a directory folio/page.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cdPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.10
linux linux_kernel 6.10


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
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          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors\n\nThe error handling in nilfs_empty_dir() when a directory folio/page read\nfails is incorrect, as in the old ext2 implementation, and if the\nfolio/page cannot be read or nilfs_check_folio() fails, it will falsely\ndetermine the directory as empty and corrupt the file system.\n\nIn addition, since nilfs_empty_dir() does not immediately return on a\nfailed folio/page read, but continues to loop, this can cause a long loop\nwith I/O if i_size of the directory\u0027s inode is also corrupted, causing the\nlog writer thread to wait and hang, as reported by syzbot.\n\nFix these issues by making nilfs_empty_dir() immediately return a false\nvalue (0) if it fails to get a directory folio/page."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: corrige el error de c\u00e1lculo de nilfs_empty_dir() y el bucle largo en errores de E/S. El manejo de errores en nilfs_empty_dir() cuando falla la lectura de una p\u00e1gina/folio de directorio es incorrecto, como en el antiguo ext2 implementaci\u00f3n, y si la publicaci\u00f3n/p\u00e1gina no se puede leer o nilfs_check_folio() falla, determinar\u00e1 err\u00f3neamente que el directorio est\u00e1 vac\u00edo y da\u00f1ar\u00e1 el sistema de archivos. Adem\u00e1s, dado que nilfs_empty_dir() no regresa inmediatamente tras una lectura fallida de un folio/p\u00e1gina, sino que contin\u00faa en bucle, esto puede provocar un bucle largo con E/S si i_size del inodo del directorio tambi\u00e9n est\u00e1 da\u00f1ado, lo que provoca que el subproceso del escritor de registros se bloquee. espera y cuelga, seg\u00fan lo informado por syzbot. Solucione estos problemas haciendo que nilfs_empty_dir() devuelva inmediatamente un valor falso (0) si no puede obtener una p\u00e1gina/folio del directorio."
    }
  ],
  "id": "CVE-2024-39469",
  "lastModified": "2025-11-03T22:17:03.833",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-06-25T15:15:15.340",
  "references": [
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      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "NVD-CWE-noinfo"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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