CVE-2023-52436 f2fs: explicitly null-terminate the xattr list
A missing null terminator in the f2fs xattr list can cause a null pointer dereference, leading to a kernel crash and 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-2023-52436?
CVE-2023-52436 is a high-severity vulnerability in Linux kernel, published on 20 Feb 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:
f2fs: explicitly null-terminate the xattr list
When setting an xattr, explicitly null-terminate the xattr list. This eliminates the fragile assumption that the unused xattr space is always zeroed.
Which versions are affected by CVE-2023-52436?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52436?
Apply the vendor's patch.
Is CVE-2023-52436 being exploited?
There is no known exploitation of CVE-2023-52436 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-52436, DEBIAN-CVE-2023-52436, GHSA-74mg-f7w3-pcrr, UBUNTU-CVE-2023-52436.