CVE-2024-26981 (GCVE-0-2024-26981)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:27 – Updated: 2026-05-11 20:08
VLAI?
Title
nilfs2: fix OOB in nilfs_set_de_type
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < 054f29e9ca05be3906544c5f2a2c7321c30a4243 (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < 90f43980ea6be4ad903e389be9a27a2a0018f1c8 (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < 7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1 (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < bdbe483da21f852c93b22557b146bc4d989260f0 (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < 897ac5306bbeb83e90c437326f7044c79a17c611 (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < 2382eae66b196c31893984a538908c3eb7506ff9 (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < 90823f8d9ecca3d5fa6b102c8e464c62f416975f (git)
Affected: 2ba466d74ed74f073257f86e61519cb8f8f46184 , < c4a7dc9523b59b3e73fd522c73e95e072f876b16 (git)
Create a notification for this product.
Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 4.19.313 , ≤ 4.19.* (semver)
Unaffected: 5.4.275 , ≤ 5.4.* (semver)
Unaffected: 5.10.216 , ≤ 5.10.* (semver)
Unaffected: 5.15.157 , ≤ 5.15.* (semver)
Unaffected: 6.1.88 , ≤ 6.1.* (semver)
Unaffected: 6.6.29 , ≤ 6.6.* (semver)
Unaffected: 6.8.8 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26981\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:15.517\",\"lastModified\":\"2025-11-04T18:15:57.607\",\"vulnStatus\":\"Modified\",\"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. 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\"c4a7dc9523b59b3e73fd522c73e95e072f876b16\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/nilfs2/dir.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.30\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.30\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.313\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.275\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.216\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.157\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.88\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.29\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nilfs2/dir.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243\"}, {\"url\": \"https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8\"}, {\"url\": \"https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1\"}, {\"url\": \"https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0\"}, {\"url\": \"https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611\"}, {\"url\": \"https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9\"}, {\"url\": \"https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f\"}, {\"url\": \"https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.313\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.275\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.216\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.157\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.88\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.29\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.8\", \"versionStartIncluding\": \"2.6.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"2.6.30\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:01:24.942Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26981\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T17:14:55.924Z\", \"dateReserved\": \"2024-02-19T14:20:24.204Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:27:06.469Z\", \"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.