# CVE-2026-68328: nfp: Check resource mutex allocation

Status: published. Published: 2026-08-10. Updated: 2026-11-06.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < 18737a48acc87e4cbe41d6fea9a3f44eae490e24 (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < 423523f96a681428ce6e214eaf47f0d8242319de (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < 0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < cfa119aa781c4044dab5b4c1e5864600f53a26bc (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3 (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < a7dc30b6828c3a30252892827b12b676749f250f (affected, git); ≥ f01a2161577d31b14581e0db3bbbdfa963f145b6; < a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc (affected, git). Source: CNA: Linux
- Linux / Linux: 4.11 (affected); ≥ 0; < 4.11 (unaffected, semver); ≥ 5.10.265; ≤ 5.10.* (unaffected, semver); ≥ 5.15.216; ≤ 5.15.* (unaffected, semver); ≥ 6.1.183; ≤ 6.1.* (unaffected, semver); ≥ 6.6.148; ≤ 6.6.* (unaffected, semver); ≥ 6.12.101; ≤ 6.12.* (unaffected, semver); ≥ 6.18.42; ≤ 6.18.* (unaffected, semver); ≥ 7.1.6; ≤ 7.1.* (unaffected, semver); ≥ 7.2; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-06; percentile 7.28%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/18737a48acc87e4cbe41d6fea9a3f44eae490e24 (CNA: Linux)

- https://git.kernel.org/stable/c/423523f96a681428ce6e214eaf47f0d8242319de (CNA: Linux)

- https://git.kernel.org/stable/c/0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae (CNA: Linux)

- https://git.kernel.org/stable/c/6dbd428119cb1fd1b73cf6968c711f4ea964dc8b (CNA: Linux)

- https://git.kernel.org/stable/c/cfa119aa781c4044dab5b4c1e5864600f53a26bc (CNA: Linux)

- https://git.kernel.org/stable/c/3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3 (CNA: Linux)

- https://git.kernel.org/stable/c/a7dc30b6828c3a30252892827b12b676749f250f (CNA: Linux)

- https://git.kernel.org/stable/c/a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc (CNA: Linux)

- https://git.kernel.org/stable/c/0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/18737a48acc87e4cbe41d6fea9a3f44eae490e24 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/423523f96a681428ce6e214eaf47f0d8242319de (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/6dbd428119cb1fd1b73cf6968c711f4ea964dc8b (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/a7dc30b6828c3a30252892827b12b676749f250f (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/cfa119aa781c4044dab5b4c1e5864600f53a26bc (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-68328; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68328; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-68328; retrieved 2026-11-06; source updated Not reported

Revision: 6e986699c5d814da115f8ba31d8597ebb39a1c4936980b9a0259f8d899588b7e

Canonical: https://y2.dev/cve/CVE-2026-68328

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