{"id":"CVE-2026-15466","title":"GPU DDK - Write UAF due to a race condition caused by insufficient locking in PVRSRVRGXCloseHWPerfClientStreamKM()","summary":"Software installed and run as a non-privileged user may conduct improper GPU system calls to cause race condition in hardware performance counters buffer’s destruction path leading to read and/or write UAF.\n\n\n\nThe race condition in the d…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"adp","cwe":["CWE-416"],"vendor":"Imagination Technologies","product":"Graphics DDK","affected":["graphics_ddk 24.2 RTM2","graphics_ddk >= 25.1 RTM2 <= 25.3 RTM","graphics_ddk 26.1 RTM2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-05T21:38:31.822886Z"},"published":"2026-10-30","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:38:51.027Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-15466","references":[{"url":"https://www.imaginationtech.com/gpu-driver-vulnerabilities/"}],"tags":["cve.org"],"epss":0.00177,"epssPercentile":0.07365,"ingestedAt":"2026-11-03T09:40:52.173Z","slug":"CVE-2026-15466","body":"## Overview\n\nSoftware installed and run as a non-privileged user may conduct improper GPU system calls to cause race condition in hardware performance counters buffer’s destruction path leading to read and/or write UAF.\n\n\n\nThe race condition in the destruction path could lead to reference counter being decremented in non-atomical way allowing other code paths using a freed object to read and/or write kernel heap memory.\n\n## Affected\n\n- `graphics_ddk 24.2 RTM2`\n- `graphics_ddk >= 25.1 RTM2 <= 25.3 RTM`\n- `graphics_ddk 26.1 RTM2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":234905,"id":"CVE-2026-15466","ts":1793918475018,"field":"cvss","old":null,"new":"7"},{"seq":234904,"id":"CVE-2026-15466","ts":1793918475018,"field":"severity","old":"none","new":"high"}]}