{
  "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-2025-21911",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21911",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-04-01T15:40:49.698Z",
    "updatedAt": "2026-05-11T21:08:54.809Z",
    "importedAt": "2026-10-24T01:57:29.455Z",
    "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": "drm/imagination: avoid deadlock on fence release",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: avoid deadlock on fence release\n\nDo scheduler queue fence release processing on a workqueue, rather\nthan in the release function itself.\n\nFixes deadlock issues such as the following:\n\n[  607.400437] ============================================\n[  607.405755] WARNING: possible recursive locking detected\n[  607.415500] --------------------------------------------\n[  607.420817] weston:zfq0/24149 is trying to acquire lock:\n[  607.426131] ffff000017d041a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: pvr_gem_object_vunmap+0x40/0xc0 [powervr]\n[  607.436728]\n               but task is already holding lock:\n[  607.442554] ffff000017d105a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: dma_buf_ioctl+0x250/0x554\n[  607.451727]\n               other info that might help us debug this:\n[  607.458245]  Possible unsafe locking scenario:\n\n[  607.464155]        CPU0\n[  607.466601]        ----\n[  607.469044]   lock(reservation_ww_class_mutex);\n[  607.473584]   lock(reservation_ww_class_mutex);\n[  607.478114]\n                *** DEADLOCK ***",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d993ae7360923efd6ade43a32043459a121c28c1"
            },
            {
              "version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9bd8b8d34cf4efba18766d64f817c819ed1bbde7"
            },
            {
              "version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde",
              "status": "affected",
              "versionType": "git",
              "lessThan": "df1a1ed5e1bdd9cc13148e0e5549f5ebcf76cf13"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.8"
            },
            {
              "version": "6.12.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.13.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.13.*"
            },
            {
              "version": "6.14",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}