CVE-2026-98413 (GCVE-0-2026-98413)
Vulnerability from cvelistv5
Published
2026-10-14 13:27
Modified
2026-10-19 09:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: selinux: always fill AVC decision in avc_has_perm_noaudit() avc_has_perm_noaudit() is documented to return a copy of the access decision in @avd, but its early return for an empty requested permission set leaves the buffer untouched. All callers pass an uninitialized stack variable and afterwards feed it to avc_audit(), and the inode hook even stores it in the per-task decision cache. Fill in a deny-all, audit-all decision, similar to avd_init(), so every caller receives a defined value at no cost on the hot path.
References
Impacted products
Vendor Product Version
Linux Linux Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
Version: e6f2f381e4015386a656a369835f949c26000e6b
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{
  "containers": {
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        {
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          "programFiles": [
            "security/selinux/avc.c"
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: always fill AVC decision in avc_has_perm_noaudit()\n\navc_has_perm_noaudit() is documented to return a copy of the access\ndecision in @avd, but its early return for an empty requested permission\nset leaves the buffer untouched.  All callers pass an uninitialized\nstack variable and afterwards feed it to avc_audit(), and the inode hook\neven stores it in the per-task decision cache.\n\nFill in a deny-all, audit-all decision, similar to avd_init(), so every\ncaller receives a defined value at no cost on the hot path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:19:07.242Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c781e737aa0de95289b1774d5fd29388895737a9"
        },
        {
          "url": "https://git.kernel.org/stable/c/e308c5acfe283a66627fc407065626df4ab753ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9da796fa238f8e4414ee8481e6c979759a3d563"
        },
        {
          "url": "https://git.kernel.org/stable/c/e77461af13eab5c9a953cc52ec8432cc941d61e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a6f9a872b4ff68877caf998bee352153b7154bc"
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        {
          "url": "https://git.kernel.org/stable/c/24e00850bcff46b984f4c44b92e5499450fcfb5a"
        },
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          "url": "https://git.kernel.org/stable/c/835133337c2ce200db56f62d018c79087dee2603"
        },
        {
          "url": "https://git.kernel.org/stable/c/8861db305103107199b1426f25fde1fb6d465583"
        }
      ],
      "title": "selinux: always fill AVC decision in avc_has_perm_noaudit()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98413",
    "datePublished": "2026-10-14T13:27:45.404Z",
    "dateReserved": "2026-09-25T10:25:14.347Z",
    "dateUpdated": "2026-10-19T09:19:07.242Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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