CVE-2026-99040

A flaw was found in the Linux kernel's key management facility. This vulnerability allows a local user with write access to bypass security controls and add unauthorized keys to a restricted keyring. The issue occurs due to a race condition between key creation and the enforcement of keyring restrictions, allowing a key to be linked using an outdated restriction state.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.