CVE-2026-53287

Description

In the Linux kernel, the following vulnerability has been resolved: audit: fix incorrect inheritable capability in CAPSET records __audit_log_capset() records the effective capability set into the inheritable field due to a copy-paste error. Every CAPSET audit record therefore reports cap_pi (process inheritable) with the value of cap_effective instead of cap_inheritable. This silently corrupts audit data used for compliance and forensic analysis: an attacker who modifies inheritable capabilities to prepare for a privilege-escalating exec would have the change masked in the audit trail. The bug has been present since the original introduction of CAPSET audit records in 2008.

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EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0a065c51a225854768b772a0b733a44d77162582 https://git.kernel.org/stable/c/151ee470edc3d7ed29fe72df678f8357d2ad8ced https://git.kernel.org/stable/c/75bd76c9eb2de9afeca03dc5152ebca5fb8fc816 https://git.kernel.org/stable/c/95de7bb4bf535a9288549d401ebde83cdcbf2792 https://git.kernel.org/stable/c/d782e4d200cd9036ef353eeb29525bfbfd13a14e https://git.kernel.org/stable/c/e35f3550c5b4fab33103c18654c293cee9850b0a https://git.kernel.org/stable/c/e4a640475e43f406fdfd56d370b1f34b0cbbc18d https://git.kernel.org/stable/c/febb4bf373ac565d3fb8d1f429827bdd983be496

Frequently Asked Questions

What is CVE-2026-53287? +

In the Linux kernel, the following vulnerability has been resolved: audit: fix incorrect inheritable capability in CAPSET records __audit_log_capset() records the effective capability set into the inheritable field due to a copy-paste error. Every CAPSET audit record therefore reports cap_pi (process inheritable) with the value of cap_effective instead of cap_inheritable. This silently corrupts audit data used for compliance and forensic analysis: an attacker who modifies inheritable capabilities to prepare for a privilege-escalating exec would have the change masked in the audit trail. The bug has been present since the original introduction of CAPSET audit records in 2008.

How do I check if I'm vulnerable to CVE-2026-53287? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.