CVE-2024-26911 drm/buddy: Fix alloc_range() error handling code
A logic error in the Linux kernel DRM buddy allocator causes display corruption and potential denial of service when memory allocation fails.
- 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-2024-26911?
CVE-2024-26911 is a high-severity denial of service vulnerability in Linux kernel, published on 17 Apr 2024. 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/buddy: Fix alloc_range() error handling code
Few users have observed display corruption when they boot the machine to KDE Plasma or playing games. We have root caused the problem that whenever alloc_range() couldn't find the required memory blocks the function was returning SUCCESS in some of the corner cases.
The right approach would be if the total allocated size is less than the required size, the function should return -ENOSPC.
Weakness: CWE-755
Which versions are affected by CVE-2024-26911?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-26911?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-26911 being exploited?
There is no known exploitation of CVE-2024-26911 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-26911, DEBIAN-CVE-2024-26911, GHSA-g5vg-rvq4-mq5p, UBUNTU-CVE-2024-26911.