CVE-2023-54315 powerpc/powernv/sriov: perform null check on iov before dereferencing iov
A null pointer dereference in the Linux kernel's PowerNV SRIOV driver allows local attackers to cause a system crash.
- 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-2023-54315?
CVE-2023-54315 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:
powerpc/powernv/sriov: perform null check on iov before dereferencing iov
Currently pointer iov is being dereferenced before the null check of iov which can lead to null pointer dereference errors. Fix this by moving the iov null check before the dereferencing.
Detected using cppcheck static analysis: linux/arch/powerpc/platforms/powernv/pci-sriov.c:597:12: warning: Either the condition '!iov' is redundant or there is possible null pointer dereference: iov. [nullPointerRedundantCheck] num_vfs = iov->num_vfs; ^
Which versions are affected by CVE-2023-54315?
How do I fix CVE-2023-54315?
Apply the vendor's patch.
Is CVE-2023-54315 being exploited?
There is no known exploitation of CVE-2023-54315 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54315, DEBIAN-CVE-2023-54315, GHSA-jx25-4v2r-83c2, UBUNTU-CVE-2023-54315.