CVE-2023-54187 f2fs: fix potential corruption when moving a directory
A flaw in the Linux kernel's F2FS filesystem can cause a crash when moving a directory, leading to 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-2023-54187?
CVE-2023-54187 is a high-severity denial of service vulnerability in Linux, published on 30 Dec 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:
f2fs: fix potential corruption when moving a directory
F2FS has the same issue in ext4_rename causing crash revealed by xfstests/generic/707.
See also commit 0813299c586b ("ext4: Fix possible corruption when moving a directory")
Which versions are affected by CVE-2023-54187?
How do I fix CVE-2023-54187?
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-2023-54187 being exploited?
There is no known exploitation of CVE-2023-54187 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54187, DEBIAN-CVE-2023-54187, GHSA-3h8m-mvxw-xrmm, ROOT-OS-UBUNTU-2204-CVE-2023-54187, ROOT-OS-UBUNTU-2404-CVE-2023-54187, UBUNTU-CVE-2023-54187.