Bug 2448336 (CVE-2025-71239)

Summary: CVE-2025-71239 kernel: audit: add fchmodat2() to change attributes class
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2026-03-17 10:02:00 UTC 
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.
Comment 1 Alexander B 2026-03-17 16:32:46 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026031708-CVE-2025-71239-47f6@gregkh/T