CVE-2026-109968 Clevis: clevis: pkcs#11 luks passphrase logged in plaintext to world-readable file
A local attacker can read world-readable log files to obtain plaintext LUKS disk encryption passphrases due to insecure logging in the clevis PKCS#11 pin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-109968?
CVE-2026-109968 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon logs LUKS disk encryption passphrases in plaintext to a log file. The log file is created without restrictive permissions, making it world-readable under the default process umask. A local attacker can read the log file to obtain the LUKS passphrase.
Weakness: CWE-532
Which versions are affected by CVE-2026-109968?
How do I fix CVE-2026-109968?
Apply the vendor's patch.
Is CVE-2026-109968 being exploited?
There is no known exploitation of CVE-2026-109968 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-109968, GHSA-6vx7-48w5-wghp, UBUNTU-CVE-2026-109968.