CVE-2026-68328 nfp: Check resource mutex allocation
A null pointer dereference in the Linux kernel nfp driver can cause a system crash when acquiring resources, requiring a kernel patch.
- 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-2026-68328?
CVE-2026-68328 is a vulnerability in Linux, published on 10 Aug 2026. 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:
nfp: Check resource mutex allocation
nfp_cpp_resource_find() allocates a CPP mutex handle for the matching resource-table entry and then reports success. nfp_resource_try_acquire() immediately passes that handle to nfp_cpp_mutex_trylock().
However, nfp_cpp_mutex_alloc() returns NULL on failure. If that happens for a matching table entry, the resource lookup still returns success and the following trylock dereferences a NULL mutex pointer while opening the resource.
nfp_resource_acquire() already treats failure to allocate the table mutex as -ENOMEM. Do the same for the resource mutex and fail the lookup before publishing the rest of the resource handle.
This issue was found by a static analysis checker and confirmed by manual source review.
Which versions are affected by CVE-2026-68328?
How do I fix CVE-2026-68328?
Apply the vendor's patch.
Is CVE-2026-68328 being exploited?
There is no known exploitation of CVE-2026-68328 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68328, DEBIAN-CVE-2026-68328, GHSA-pcvh-8mrv-q3wv, UBUNTU-CVE-2026-68328.