Vulnerability-Lookup

FKIE_CVE-2025-71239

Vulnerability from fkie_nvd - Published: 2026-03-17 10:15 - Updated: 2026-05-20 19:47

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: audit: add fchmodat2() to change attributes class fchmodat2(), introduced in version 6.6 is currently not in the change attribute class of audit. Calling fchmodat2() to change a file attribute in the same fashion than chmod() or fchmodat() will bypass audit rules such as: -w /tmp/test -p rwa -k test_rwa The current patch adds fchmodat2() to the change attributes class.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3e762a03713e8c25ca0108c075d662c897fc0623	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4fed776ca86378da7dd743a7b648e20b025ba8ef	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/91e27bc79c3bca93c06bf5a471d47df9a35b3741	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://www.bencteux.fr/posts/missing_syscalls_audit/	Third Party Advisory

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C0FD95A9-209E-44A8-8F1D-1EB130F75861",
              "versionEndExcluding": "6.6.128",
              "versionStartIncluding": "6.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2",
              "versionEndExcluding": "6.12.75",
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            {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naudit: add fchmodat2() to change attributes class\n\nfchmodat2(), introduced in version 6.6 is currently not in the change\nattribute class of audit. Calling fchmodat2() to change a file\nattribute in the same fashion than chmod() or fchmodat() will bypass\naudit rules such as:\n\n-w /tmp/test -p rwa -k test_rwa\n\nThe current patch adds fchmodat2() to the change attributes class."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\naudit: a\u00f1adir fchmodat2() a la clase de cambio de atributos\n\nfchmodat2(), introducido en la versi\u00f3n 6.6, actualmente no est\u00e1 en la clase de cambio de atributos de audit. Llamar a fchmodat2() para cambiar un atributo de archivo de la misma manera que chmod() o fchmodat() eludir\u00e1 las reglas de audit como:\n\n-w /tmp/test -p rwa -k test_rwa\n\nEl parche actual a\u00f1ade fchmodat2() a la clase de cambio de atributos."
    }
  ],
  "id": "CVE-2025-71239",
  "lastModified": "2026-05-20T19:47:56.780",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2026-03-17T10:15:59.010",
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      "tags": [
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    },
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      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-71239 (GCVE-0-2025-71239)

Vulnerability from cvelistv5 – Published: 2026-03-17 09:11 – Updated: 2026-05-11 21:57

Title

audit: add fchmodat2() to change attributes class

Summary

Severity

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/91e27bc79c3bca93c…
https://git.kernel.org/stable/c/3e762a03713e8c25c…
https://git.kernel.org/stable/c/4fed776ca86378da7…
https://git.kernel.org/stable/c/c4334c0d0e7d6f02e…
https://git.kernel.org/stable/c/4f493a6079b588cf1…
https://www.bencteux.fr/posts/missing_syscalls_audit/

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 91e27bc79c3bca93c06bf5a471d47df9a35b3741 (git) Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 3e762a03713e8c25ca0108c075d662c897fc0623 (git) Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 4fed776ca86378da7dd743a7b648e20b025ba8ef (git) Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f (git) Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc (git)
Linux	Linux	Affected: 6.6 Unaffected: 0 , < 6.6 (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/asm-generic/audit_change_attr.h"
          ],
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              "version": "6.18.16",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
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}

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.

Action not permitted

FKIE_CVE-2025-71239

CVE-2025-71239 (GCVE-0-2025-71239)

Tags

Sightings

Nomenclature