{"schemaVersion":3,"id":"CVE-2026-16280","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An integer overflow when calculating physical offsets for sparse PMRs may result in 32-bit truncation of address computations for PMRs larger than 4 GB. This can lead to incorrect GPU MMU mappings and may allow a non-privileged user to trigger access to unintended physical memory, resulting in memory corruption or information disclosure.","dates":{"published":"2026-07-24T22:02:38.245Z","modified":"2026-07-27T16:02:36.595Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00531,"percentile":0.44002,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.23599999999999996,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00295},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00531,"percentile":0.44002}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00295,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00531,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00531,"percentile":0.44002}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"imagination technologies","product":"graphics ddk","name":"Graphics DDK","label":"graphics ddk","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.18 RTM2","noFixRecorded":false,"fixedIn":null},{"text":"23.2 RTM2","noFixRecorded":false,"fixedIn":null},{"text":"24.2 RTM2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.1 RTM2, ≤ 25.3 RTM","noFixRecorded":false,"fixedIn":null},{"text":"26.1 RTM1","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.18 RTM2 | 23.2 RTM2 | 24.2 RTM2 | ≥ 25.1 RTM2, ≤ 25.3 RTM | 26.1 RTM1","eol":null,"hubHref":"/vendor/imagination_technologies/graphics_ddk"},{"vendor":"imaginationtech","product":"ddk","name":"ddk","label":"ddk","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 26.1","noFixRecorded":false,"fixedIn":null},{"text":"26.1:rtm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 26.1 | 26.1:rtm1","eol":null,"hubHref":"/vendor/imaginationtech/ddk"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.imaginationtech.com/gpu-driver-vulnerabilities/","label":"www.imaginationtech.com/gpu-driver-vulnerabilities/","hostname":"www.imaginationtech.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-07-24T22:02:38.245Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-27T16:02:36.595Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T09:19:05.231Z","stale":false,"partial":false}}