CVE-2026-68328

A flaw was found in the Linux kernel's nfp driver. When allocating a resource mutex, the nfp_cpp_mutex_alloc() function can return a NULL pointer on failure. However, the nfp_cpp_resource_find() function might still report success, leading to a subsequent attempt to dereference the NULL pointer by nfp_resource_try_acquire(). This can allow a local attacker to cause a system crash, resulting in a denial of service.

This issue affects systems using Netronome NFP network adapters. When CPP mutex allocation fails during resource lookup, the driver still reports success and later dereferences a NULL mutex pointer. Systems without NFP hardware are not affected.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the nfp module from loading. See https://access.redhat.com/solutions/41278 for instructions.