{
  "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-2025-39994",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39994",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-15T07:58:19.503Z",
    "updatedAt": "2026-10-15T22:02:35.851Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "media: tuner: xc5000: Fix use-after-free in xc5000_release",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: tuner: xc5000: Fix use-after-free in xc5000_release\n\nThe original code uses cancel_delayed_work() in xc5000_release(), which\ndoes not guarantee that the delayed work item timer_sleep has fully\ncompleted if it was already running. This leads to use-after-free scenarios\nwhere xc5000_release() may free the xc5000_priv while timer_sleep is still\nactive and attempts to dereference the xc5000_priv.\n\nA typical race condition is illustrated below:\n\nCPU 0 (release thread)                 | CPU 1 (delayed work callback)\nxc5000_release()                       | xc5000_do_timer_sleep()\n  cancel_delayed_work()                |\n  hybrid_tuner_release_state(priv)     |\n    kfree(priv)                        |\n                                       |   priv = container_of() // UAF\n\nReplace cancel_delayed_work() with cancel_delayed_work_sync() to ensure\nthat the timer_sleep is properly canceled before the xc5000_priv memory\nis deallocated.\n\nA deadlock concern was considered: xc5000_release() is called in a process\ncontext and is not holding any locks that the timer_sleep work item might\nalso need. Therefore, the use of the _sync() variant is safe here.\n\nThis bug was initially identified through static analysis.\n\n[hverkuil: fix typo in Subject: tunner -> tuner]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bc4ffd962ce16a154c44c68853b9d93f5b6fc4b8"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e2f5eaafc0306a76fb1cb760aae804b065b8a341"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3f876cd47ed8bca1e28d68435845949f51f90703"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "df0303b4839520b84d9367c2fad65b13650a4d42"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "71ed8b81a4906cb785966910f39cf7f5ad60a69e"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "effb1c19583bca7022fa641a70766de45c6d41ac"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9a00de20ed8ba90888479749b87bc1532cded4ce"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4266f012806fc18e46da4a04d130df59a4946f93"
            },
            {
              "version": "f7a27ff1fb77e114d1059a5eb2ed1cffdc508ce8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "40b7a19f321e65789612ebaca966472055dab48c"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.16"
            },
            {
              "version": "5.4.301",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.246",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.195",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.156",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.51",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.16.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}