CVE-2024-43857 f2fs: fix null reference error when checking end of zone
A null pointer dereference in the Linux kernel f2fs filesystem can cause a system crash when checking zone boundaries on single-device mounts.
- 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-2024-43857?
CVE-2024-43857 is a medium-severity vulnerability in Linux kernel, published on 17 Aug 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: fix null reference error when checking end of zone
This patch fixes a potentially null pointer being accessed by is_end_zone_blkaddr() that checks the last block of a zone when f2fs is mounted as a single device.
Weakness: CWE-476
Which versions are affected by CVE-2024-43857?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-43857?
Apply the vendor's patch.
Is CVE-2024-43857 being exploited?
There is no known exploitation of CVE-2024-43857 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-48056, BELL-CVE-2024-43857, DEBIAN-CVE-2024-43857, GHSA-v5c2-f543-4vhm, UBUNTU-CVE-2024-43857.