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CVE-2025-71239 is a Linux kernel audit subsystem flaw affecting kernels where the fchmodat2() syscall, introduced in Linux 6.6, was not included in the audit subsystem's change-attributes class. Because audit rules that monitor file attribute changes were wired to equivalent operations such as chmod() and fchmodat(), but not to fchmodat2(), a local user could change file mode attributes through fchmodat2() without triggering expected audit records. The issue is resolved by adding fchmodat2() to the audit change-attributes class so that attribute changes performed through that syscall are evaluated against configured audit rules.
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No public exploit code observed for this vulnerability.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.