CVE-2024-57931 selinux: ignore unknown extended permissions
A flaw in the Linux kernel SELinux module causes a system crash when encountering unknown extended permissions, requiring a patch to prevent denial of service.
- 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-2024-57931?
CVE-2024-57931 is a medium-severity denial of service vulnerability in Linux kernel, published on 21 Jan 2025. 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:
selinux: ignore unknown extended permissions
When evaluating extended permissions, ignore unknown permissions instead of calling BUG(). This commit ensures that future permissions can be added without interfering with older kernels.
Which versions are affected by CVE-2024-57931?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-57931?
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-2024-57931 being exploited?
There is no known exploitation of CVE-2024-57931 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-57931, DEBIAN-CVE-2024-57931, GHSA-ccfr-2656-2j6h, UBUNTU-CVE-2024-57931.