CVE-2026-72241 leds: uleds: Fix potential buffer overread
A local attacker can trigger a buffer overread in the Linux kernel LED subsystem by providing a non-null-terminated string, potentially causing information disclosure or system crash.
- 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-2026-72241?
CVE-2026-72241 is a memory corruption vulnerability in Linux, published on 15 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:
leds: uleds: Fix potential buffer overread
The name string supplied by userspace is not guaranteed to be null-terminated, so using strchr() on it might result in a buffer overread. The same thing will happen when said string is used by the LED class device.
Fix this by using strnchr() instead and explicitly check that the name string is properly null-terminated.
Which versions are affected by CVE-2026-72241?
How do I fix CVE-2026-72241?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-72241 being exploited?
There is no known exploitation of CVE-2026-72241 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72241, DEBIAN-CVE-2026-72241, GHSA-p332-q22m-rchg, UBUNTU-CVE-2026-72241.