CVE-2026-68328: In the Linux kernel, the following vulnerability has been resolved: nfp: Check resource mutex allocation nfp_cpp_resource_find() allocates a CPP mut...

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

Vendor	Product	Versions
Linux	Linux	>= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < cfa119aa781c4044dab5b4c1e5864600f53a26bc; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < a7dc30b6828c3a30252892827b12b676749f250f; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc
Linux	Linux	4.11

References

Timeline

Published: Aug 10, 2026
Last Modified: Aug 10, 2026
Status: Received

Frequently Asked Questions

What is CVE-2026-68328?

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.

How severe is CVE-2026-68328?

Severity scoring for CVE-2026-68328 is pending analysis.

How do I fix CVE-2026-68328?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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