Linux Kernel up to 6.19.5 audit fchmodat2 privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.19.5. Impacted is the function fchmodat2 of the component audit. Such manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2025-71239. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19.5 and classified as critical. Affected by this issue is the function fchmodat2 of the component audit. The impact remains unknown. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2025-71239 since 02/18/2026. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/20/2026).

The vulnerability scanner Nessus provides a plugin with the ID 302812 (Linux Distros Unpatched Vulnerability : CVE-2025-71239), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6 or 7.0-rc1 eliminates this vulnerability. Applying the patch f714315d7d68898d03093f67285256a8770f903c/3ee75b13ea5f05ff9adc784b2464825bd70eb119/57489a89657cc94bf6ad8427d1902daba9156aa1/91e27bc79c3bca93c06bf5a471d47df9a35b3741/3e762a03713e8c25ca0108c075d662c897fc0623/4fed776ca86378da7dd743a7b648e20b025ba8ef/c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f/4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (302812) and CERT Bund (WID-SEC-2026-0754). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source Linux Kernel

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302812
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71239

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.252/5.15.202/6.1.165/6.6.128/6.12.75/6.18.16/6.19.6/7.0-rc1
Patch: f714315d7d68898d03093f67285256a8770f903c/3ee75b13ea5f05ff9adc784b2464825bd70eb119/57489a89657cc94bf6ad8427d1902daba9156aa1/91e27bc79c3bca93c06bf5a471d47df9a35b3741/3e762a03713e8c25ca0108c075d662c897fc0623/4fed776ca86378da7dd743a7b648e20b025ba8ef/c4334c0d0e7d6f02ed93756fd4ba807e3d00c05f/4f493a6079b588cf1f04ce5ed6cdad45ab0d53dc

Timelineinfo

02/18/2026 CVE reserved
03/17/2026 +27 days Advisory disclosed
03/17/2026 +0 days VulDB entry created
05/20/2026 +64 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71239 (🔒)
GCVE (CVE): GCVE-0-2025-71239
GCVE (VulDB): GCVE-100-351356
CERT Bund: WID-SEC-2026-0754 - Linux Kernel: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 03/17/2026 10:53
Updated: 05/20/2026 22:32
Changes: 03/17/2026 10:53 (58), 03/17/2026 18:46 (7), 03/18/2026 03:48 (2), 03/21/2026 18:45 (1), 05/20/2026 22:32 (10)
Complete: 🔍
Cache ID: 216::103

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