CVE-2026-68134 ptp: ptp_s390: Add missing facility check
The Linux kernel PTP driver for s390 lacks a facility check, potentially causing system instability or crashes when unsupported hardware features are accessed.
- 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-2026-68134?
CVE-2026-68134 is a high-severity vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ptp: ptp_s390: Add missing facility check
Only register the physical clock when facility 28 is installed and PTFF QAF returns that PTFF QPT is available.
Which versions are affected by CVE-2026-68134?
How do I fix CVE-2026-68134?
Apply the vendor's patch.
Is CVE-2026-68134 being exploited?
There is no known exploitation of CVE-2026-68134 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68134, DEBIAN-CVE-2026-68134, GHSA-6q8g-f67g-jgcc, UBUNTU-CVE-2026-68134.