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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 18737a48acc87e4cbe41d6fea9a3f44eae490e24; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 423523f96a681428ce6e214eaf47f0d8242319de; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < cfa119aa781c4044dab5b4c1e5864600f53a26bc; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < a7dc30b6828c3a30252892827b12b676749f250f; >= f01a2161577d31b14581e0db3bbbdfa963f145b6, < a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc |
| Linux | Linux | 4.11 |
References
- https://git.kernel.org/stable/c/0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae
- https://git.kernel.org/stable/c/18737a48acc87e4cbe41d6fea9a3f44eae490e24
- https://git.kernel.org/stable/c/3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3
- https://git.kernel.org/stable/c/423523f96a681428ce6e214eaf47f0d8242319de
- https://git.kernel.org/stable/c/6dbd428119cb1fd1b73cf6968c711f4ea964dc8b
- https://git.kernel.org/stable/c/a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc
- https://git.kernel.org/stable/c/a7dc30b6828c3a30252892827b12b676749f250f
- https://git.kernel.org/stable/c/cfa119aa781c4044dab5b4c1e5864600f53a26bc
Timeline
- Published
- Aug 10, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Received