{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-89548",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89548",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:44:23.298Z",
    "updatedAt": "2026-10-19T08:48:41.057Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "SUNRPC: always drain cache_cleaner before destroying a cache_detail",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: always drain cache_cleaner before destroying a cache_detail\n\nsunrpc_destroy_cache_detail() only cancels the global cache_cleaner\ndelayed_work when cache_list is empty.  During per-netns teardown\ncache_list is never empty because init_net's caches remain registered,\nso the cancel never fires.  After unlink, the caller proceeds to\ncache_destroy_net() which kfrees the cache_detail while cache_clean()\nmay still hold a dangling pointer to it.  The result is a\nuse-after-free: cache_dequeue() takes cd->queue_lock on freed memory,\nand cache_put() dereferences cd->cache_put as a function pointer from\nfreed slab.\n\nDrop the list_empty guard so that cancel_delayed_work_sync() always\nruns, ensuring any in-flight cache_clean() completes before the\ncache_detail is freed.  Re-arm the cleaner afterwards if other caches\nare still registered.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dec787a15c96a5665e9ffc61b429a6a4ab26e6b9"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5eea874a696201c31e7c2d7badbfa0d90e9961b5"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf239de7fdcc8336259b01ea4bcf650dadad1040"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6d74ecc2be120a0c300b224b7649fe93c0453714"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9d44836f60c8c29bcdb1471fd9202387c642a890"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2e861ce2aaa468351a6a47c4cbb4971ebb740c7b"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3d60fdf951143d6ef4e352e2f8eb852286701726"
            },
            {
              "version": "820f9442e711a81749e70c40f149fc54c4ce0ca8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f42d0fda0c67695db6bc704b04b7c10240805377"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.4"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}