FKIE_CVE-2024-26981

Vulnerability from fkie_nvd - Published: 2024-05-01 06:15 - Updated: 2026-06-17 07:18
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix OOB in nilfs_set_de_type The size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is defined as "S_IFMT >> S_SHIFT", but the nilfs_set_de_type() function, which uses this array, specifies the index to read from the array in the same way as "(mode & S_IFMT) >> S_SHIFT". static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t mode = inode->i_mode; de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob } However, when the index is determined this way, an out-of-bounds (OOB) error occurs by referring to an index that is 1 larger than the array size when the condition "mode & S_IFMT == S_IFMT" is satisfied. Therefore, a patch to resize the nilfs_type_by_mode array should be applied to prevent OOB errors.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/
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 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
debian debian_linux 10.0
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix OOB in nilfs_set_de_type\n\nThe size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is\ndefined as \"S_IFMT \u003e\u003e S_SHIFT\", but the nilfs_set_de_type() function,\nwhich uses this array, specifies the index to read from the array in the\nsame way as \"(mode \u0026 S_IFMT) \u003e\u003e S_SHIFT\".\n\nstatic void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode\n *inode)\n{\n\tumode_t mode = inode-\u003ei_mode;\n\n\tde-\u003efile_type = nilfs_type_by_mode[(mode \u0026 S_IFMT)\u003e\u003eS_SHIFT]; // oob\n}\n\nHowever, when the index is determined this way, an out-of-bounds (OOB)\nerror occurs by referring to an index that is 1 larger than the array size\nwhen the condition \"mode \u0026 S_IFMT == S_IFMT\" is satisfied.  Therefore, a\npatch to resize the nilfs_type_by_mode array should be applied to prevent\nOOB errors."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: corrige OOB en nilfs_set_de_type El tama\u00f1o de la matriz nilfs_type_by_mode en el archivo fs/nilfs2/dir.c se define como \"S_IFMT \u0026gt;\u0026gt; S_SHIFT\", pero la funci\u00f3n nilfs_set_de_type() , que utiliza esta matriz, especifica el \u00edndice a leer de la matriz de la misma manera que \"(mode \u0026amp; S_IFMT) \u0026gt;\u0026gt; S_SHIFT\". static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t modo = inodo-\u0026gt;i_mode; de-\u0026gt;tipo_archivo = nilfs_type_by_mode[(modo \u0026amp; S_IFMT)\u0026gt;\u0026gt;S_SHIFT]; // oob } Sin embargo, cuando el \u00edndice se determina de esta manera, se produce un error fuera de los l\u00edmites (OOB) al hacer referencia a un \u00edndice que es 1 mayor que el tama\u00f1o de la matriz cuando la condici\u00f3n \"modo \u0026amp; S_IFMT == S_IFMT\" es satisfecho. Por lo tanto, se debe aplicar un parche para cambiar el tama\u00f1o de la matriz nilfs_type_by_mode para evitar errores OOB."
    }
  ],
  "id": "CVE-2024-26981",
  "lastModified": "2026-06-17T07:18:51.153",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-26981",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-07-17T14:33:30.572731Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-01T06:15:15.517",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-129"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Tags
Taxonomy of the tags.





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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.