Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before 18737a48acc87e4cbe41d6fea9a3f44eae490e24; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before 423523f96a681428ce6e214eaf47f0d8242319de; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before 0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before cfa119aa781c4044dab5b4c1e5864600f53a26bc; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before a7dc30b6828c3a30252892827b12b676749f250f; affected f01a2161577d31b14581e0db3bbbdfa963f145b6 before a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc |
| Linux / Linux | affected 4.11; unaffected 0 before 4.11; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/18737a48acc87e4cbe41d6fea9a3f44eae490e24
- https://git.kernel.org/stable/c/423523f96a681428ce6e214eaf47f0d8242319de
- https://git.kernel.org/stable/c/0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae
- https://git.kernel.org/stable/c/6dbd428119cb1fd1b73cf6968c711f4ea964dc8b
- https://git.kernel.org/stable/c/cfa119aa781c4044dab5b4c1e5864600f53a26bc
- https://git.kernel.org/stable/c/3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3
- https://git.kernel.org/stable/c/a7dc30b6828c3a30252892827b12b676749f250f
- https://git.kernel.org/stable/c/a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc