{"id":"CVE-2026-45203","state":"PUBLISHED","title":"GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU","description":"Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel.\n\n\n\nA TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.","publishedAt":"2026-07-10T20:57:19.733Z","updatedAt":"2026-07-13T18:55:12.679Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"imaginationtech","products":["Imagination Technologies Graphics DDK"],"affected":[{"vendor":"Imagination Technologies","product":"Graphics DDK","defaultStatus":"unknown","versions":[{"version":"1.18 RTM2","status":"affected","versionType":"custom"},{"version":"23.2 RTM2","status":"affected","versionType":"custom"},{"version":"24.2 RTM2","status":"affected","versionType":"custom"},{"version":"25.1 RTM2","status":"affected","lessThanOrEqual":"25.3 RTM","versionType":"custom"},{"version":"26.1 RTM1","status":"affected","versionType":"custom"},{"version":"26.1 RTM2","status":"unaffected","versionType":"custom"}],"platforms":["Linux","Android"]}],"references":["https://www.imaginationtech.com/gpu-driver-vulnerabilities/"],"weaknesses":["CWE-367"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45203.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45203","state":"PUBLISHED","datePublished":"2026-07-10T20:57:19.733Z","dateUpdated":"2026-07-13T18:55:12.679Z","assignerShortName":"imaginationtech","assignerOrgId":"367425dc-4d06-4041-9650-c2dc6aaa27ce","dateReserved":"2026-05-11T10:58:04.163Z"},"containers":{"cna":{"title":"GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU","descriptions":[{"lang":"en","value":"Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel.\n\n\n\nA TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use."}],"affected":[{"vendor":"Imagination Technologies","product":"Graphics DDK","defaultStatus":"unknown","versions":[{"version":"1.18 RTM2","status":"affected","versionType":"custom"},{"version":"23.2 RTM2","status":"affected","versionType":"custom"},{"version":"24.2 RTM2","status":"affected","versionType":"custom"},{"version":"25.1 RTM2","status":"affected","lessThanOrEqual":"25.3 RTM","versionType":"custom"},{"version":"26.1 RTM1","status":"affected","versionType":"custom"},{"version":"26.1 RTM2","status":"unaffected","versionType":"custom"}],"platforms":["Linux","Android"]}],"references":[{"url":"https://www.imaginationtech.com/gpu-driver-vulnerabilities/"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","lang":"en","description":"CWE - CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (4.20)","type":"CWE"}]}],"providerMetadata":{"shortName":"imaginationtech","orgId":"367425dc-4d06-4041-9650-c2dc6aaa27ce","dateUpdated":"2026-07-10T20:57:19.733Z"},"impacts":[{"capecId":"CAPEC-480","descriptions":[{"lang":"en","value":"CAPEC - CAPEC-480: Escaping Virtualization (Version 3.9)"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-13T18:33:59.825342Z","id":"CVE-2026-45203","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-13T18:55:12.679Z"}}]}}}