CVE-2026-80741 drm/log: Fix out-of-bounds read on empty message length
An integer underflow in the Linux kernel DRM logging allows out-of-bounds reads when processing empty messages, potentially causing crashes or information leaks.
- 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-2026-80741?
CVE-2026-80741 is a high-severity vulnerability in Linux, published on 3 Sep 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:
drm/log: Fix out-of-bounds read on empty message length
drm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing newline, but len is unsigned int. If len is 0, the subtraction wraps to UINT_MAX, causing an out-of-bounds read.
Add an early return when len is 0.
Which versions are affected by CVE-2026-80741?
How do I fix CVE-2026-80741?
Apply the vendor's patch.
Is CVE-2026-80741 being exploited?
There is no known exploitation of CVE-2026-80741 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-80741, DEBIAN-CVE-2026-80741, GHSA-5gj3-6gp4-j7pm, UBUNTU-CVE-2026-80741.