CVE-2023-54248 fs/ntfs3: Add check for kmemdup
A missing null check in the Linux kernel NTFS3 driver allows local attackers to cause a denial of service via null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-54248?
CVE-2023-54248 is a 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:
fs/ntfs3: Add check for kmemdup
Since the kmemdup may return NULL pointer, it should be better to add check for the return value in order to avoid NULL pointer dereference.
Which versions are affected by CVE-2023-54248?
How do I fix CVE-2023-54248?
Apply the vendor's patch.
Is CVE-2023-54248 being exploited?
There is no known exploitation of CVE-2023-54248 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54248, DEBIAN-CVE-2023-54248, GHSA-jf6q-v9m6-wc7j, UBUNTU-CVE-2023-54248.