Bug 2493732 (CVE-2026-53287) - CVE-2026-53287 kernel: audit: fix incorrect inheritable capability in CAPSET records
Summary: CVE-2026-53287 kernel: audit: fix incorrect inheritable capability in CAPSET ...
Keywords:
Status: NEW
Alias: CVE-2026-53287
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-26 21:03 UTC by OSIDB Bzimport
Modified: 2026-06-29 20:06 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-06-26 21:03:51 UTC
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.

Comment 1 Mauro Matteo Cascella 2026-06-29 20:02:30 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062616-CVE-2026-53287-f2c3@gregkh/T


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