{
  "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-2026-97900",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-97900",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-25T10:22:28.057Z",
    "updatedAt": "2026-10-19T09:10:26.649Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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/drm_exec: fix up contended obj when num_objects is 0",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/drm_exec: fix up contended obj when num_objects is 0\n\ndrm_exec_prepare_array() silently returns success without calling\ndrm_exec_lock_contended() when num_objects is zero. This breaks the\ninvariant upheld by drm_exec_lock_obj(), where every entry point into\nthe locking sequence must first attempt to lock any previously\ncontended object before proceeding.\n\nDrivers that chain multiple drm_exec_prepare_array() calls per\ndrm_exec_until_all_locked() iteration (e.g. amdgpu's userq signal/wait\nioctls, which prepare separate read and write BO arrays) can pass an\nempty array for one of the two calls. If contention is hit while\npreparing the non-empty array, exec->contended is set and the loop\nretries; on retry, the empty-array call preceding it is a no-op that\nnever clears exec->contended, so drm_exec_retry_on_contention()\nimmediately jumps back to the top of the loop without ever reaching\nthe call that would resolve the contention. This spins forever.\n\nFix it by having drm_exec_prepare_array() call drm_exec_lock_contended()\ndirectly when num_objects is zero, so a pending contended object dont\nloop infinitely.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "09593216bff15866f95c8ad406cb7fdcec1ee40a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "506cfed91e50cc8055799480a2fde5a18f63a21c"
            },
            {
              "version": "09593216bff15866f95c8ad406cb7fdcec1ee40a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "831cd124ce99c3e61266bed30519d52f7c26abed"
            },
            {
              "version": "09593216bff15866f95c8ad406cb7fdcec1ee40a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f3e74866018dab793ebee1fdf0ef34f7271d1f8c"
            },
            {
              "version": "09593216bff15866f95c8ad406cb7fdcec1ee40a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a565022c02f218ec9789c2baf4690792e7a48cbb"
            },
            {
              "version": "09593216bff15866f95c8ad406cb7fdcec1ee40a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "159720704d9d652b64390c11fb971e15b0a78d23"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.6"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}