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

Vulnerability from cvelistv5 – Published: 2026-03-17 09:11 – Updated: 2026-05-11 21:57
VLAI
Title
audit: add fchmodat2() to change attributes class
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 91e27bc79c3bca93c06bf5a471d47df9a35b3741 (git)
Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 3e762a03713e8c25ca0108c075d662c897fc0623 (git)
Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 4fed776ca86378da7dd743a7b648e20b025ba8ef (git)
Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f (git)
Affected: 09da082b07bbae1c11d9560c8502800039aebcea , < 4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc (git)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
Show details on NVD website
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    "dateReserved": "2026-02-18T14:25:13.845Z",
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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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"include/asm-generic/audit_change_attr.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"09da082b07bbae1c11d9560c8502800039aebcea\",\"lessThan\":\"91e27bc79c3bca93c06bf5a471d47df9a35b3741\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"09da082b07bbae1c11d9560c8502800039aebcea\",\"lessThan\":\"3e762a03713e8c25ca0108c075d662c897fc0623\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"09da082b07bbae1c11d9560c8502800039aebcea\",\"lessThan\":\"4fed776ca86378da7dd743a7b648e20b025ba8ef\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"09da082b07bbae1c11d9560c8502800039aebcea\",\"lessThan\":\"c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"09da082b07bbae1c11d9560c8502800039aebcea\",\"lessThan\":\"4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"include/asm-generic/audit_change_attr.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.128\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.16\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.6\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.128\",\"matchCriteriaId\":\"C0FD95A9-209E-44A8-8F1D-1EB130F75861\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"BCE16369-98ED-41CF-8995-DFDC10B288D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.16\",\"matchCriteriaId\":\"B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.6\",\"matchCriteriaId\":\"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3e762a03713e8c25ca0108c075d662c897fc0623\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4fed776ca86378da7dd743a7b648e20b025ba8ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/91e27bc79c3bca93c06bf5a471d47df9a35b3741\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://www.bencteux.fr/posts/missing_syscalls_audit/\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
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      "cve": "CVE-2025-71239",
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      "product_status:known_affected": "14",
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      "title": "kernel: audit: add fchmodat2() to change attributes class",
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  }
}



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  • 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.
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  • 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.


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