CVE-2026-68328

nfp: Check resource mutex allocation

State: Published
Severity: Not scored
Published: Aug 10, 2026
Updated: Aug 19, 2026
Reserved: Jul 30, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 18737a48acc87e4cbe41d6fea9a3f44eae490e24Affected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 423523f96a681428ce6e214eaf47f0d8242319deAffected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 0dbd85a8cc35c14bd26e686fa5fae8c64a7958aeAffected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 6dbd428119cb1fd1b73cf6968c711f4ea964dc8bAffected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before cfa119aa781c4044dab5b4c1e5864600f53a26bcAffected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3Affected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before a7dc30b6828c3a30252892827b12b676749f250fAffected f01a2161577d31b14581e0db3bbbdfa963f145b6 to before a61b4db34a753bdf5c9e77a7f3d3dddd41dcfaccAffected
LinuxLinux	4.11Affected before 4.11Not affected 5.10.265 through 5.10.Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.148 through 6.6.Not affected 6.12.101 through 6.12.Not affected 6.18.42 through 6.18.Not affected 7.1.6 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 18737a48acc87e4cbe41d6fea9a3f44eae490e24Affected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 423523f96a681428ce6e214eaf47f0d8242319deAffected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 0dbd85a8cc35c14bd26e686fa5fae8c64a7958aeAffected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 6dbd428119cb1fd1b73cf6968c711f4ea964dc8bAffected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before cfa119aa781c4044dab5b4c1e5864600f53a26bcAffected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3Affected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before a7dc30b6828c3a30252892827b12b676749f250fAffected
f01a2161577d31b14581e0db3bbbdfa963f145b6 to before a61b4db34a753bdf5c9e77a7f3d3dddd41dcfaccAffected

LinuxLinux

4.11Affected
before 4.11Not affected
5.10.265 through 5.10.*Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.148 through 6.6.*Not affected
6.12.101 through 6.12.*Not affected
6.18.42 through 6.18.*Not affected
7.1.6 through 7.1.*Not affected
7.2 and laterNot affected

References

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