CVE-2026-68328 (GCVE-0-2026-68328)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:33
VLAI
Title
nfp: Check resource mutex allocation
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < 18737a48acc87e4cbe41d6fea9a3f44eae490e24 (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < 423523f96a681428ce6e214eaf47f0d8242319de (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < 0dbd85a8cc35c14bd26e686fa5fae8c64a7958ae (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < 6dbd428119cb1fd1b73cf6968c711f4ea964dc8b (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < cfa119aa781c4044dab5b4c1e5864600f53a26bc (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < 3b1d4fc3b73ea6faf008a0996ce6190c6e43efc3 (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < a7dc30b6828c3a30252892827b12b676749f250f (git)
Affected: f01a2161577d31b14581e0db3bbbdfa963f145b6 , < a61b4db34a753bdf5c9e77a7f3d3dddd41dcfacc (git)
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Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfp: Check resource mutex allocation\n\nnfp_cpp_resource_find() allocates a CPP mutex handle for the matching\nresource-table entry and then reports success.  nfp_resource_try_acquire()\nimmediately passes that handle to nfp_cpp_mutex_trylock().\n\nHowever, nfp_cpp_mutex_alloc() returns NULL on failure.  If that happens\nfor a matching table entry, the resource lookup still returns success and\nthe following trylock dereferences a NULL mutex pointer while opening the\nresource.\n\nnfp_resource_acquire() already treats failure to allocate the table mutex\nas -ENOMEM.  Do the same for the resource mutex and fail the lookup before\npublishing the rest of the resource handle.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review."
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    "dateReserved": "2026-07-30T09:28:09.382Z",
    "dateUpdated": "2026-08-19T16:33:25.716Z",
    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfp: Check resource mutex allocation\n\nnfp_cpp_resource_find() allocates a CPP mutex handle for the matching\nresource-table entry and then reports success.  nfp_resource_try_acquire()\nimmediately passes that handle to nfp_cpp_mutex_trylock().\n\nHowever, nfp_cpp_mutex_alloc() returns NULL on failure.  If that happens\nfor a matching table entry, the resource lookup still returns success and\nthe following trylock dereferences a NULL mutex pointer while opening the\nresource.\n\nnfp_resource_acquire() already treats failure to allocate the table mutex\nas -ENOMEM.  Do the same for the resource mutex and fail the lookup before\npublishing the rest of the resource handle.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review."
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    "redhat_vex": {
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      "current_release_date": "2026-08-31T11:45:08+00:00",
      "cve": "CVE-2026-68328",
      "id": "CVE-2026-68328",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "109",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfp: Check resource mutex allocation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68328.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-23T00:20:21Z",
      "cve": "CVE-2026-68328",
      "id": "CVE-2026-68328",
      "initial_release_date": "2026-08-11T23:47:44Z",
      "product_status:first_fixed": "68",
      "product_status:known_affected": "671",
      "product_status:known_not_affected": "6",
      "product_status:recommended": "130",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68328",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68328.json",
      "version": "11"
    }
  }
}



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