{"id":"CVE-2026-93517","state":"PUBLISHED","title":"X.Org Server GLX RenderLarge Heap Buffer Overflow","description":"A heap buffer overflow in handling GLX\nRenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.","publishedAt":"2026-10-28T13:16:39.431Z","updatedAt":"2026-10-28T13:16:39.431Z","severity":{"score":8.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"suse"},"assigner":"suse","products":["x.orgg xorg-x11-server","x.org xwayland"],"affected":[{"vendor":"x.orgg","product":"xorg-x11-server","packageName":"xorg-x11-server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.1.25","versionType":"rpm"}],"repo":"https://gitlab.freedesktop.org/xorg/xserver"},{"vendor":"x.org","product":"xwayland","packageName":"xwayland","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"24.1.14","versionType":"rpm"}],"repo":"https://gitlab.freedesktop.org/xorg/xserver"}],"references":["https://gitlab.freedesktop.org/xorg/xserver/-/commit/2abe4632d793314d3d5f28c19583fb76019f5ce4"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93517.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93517","state":"PUBLISHED","datePublished":"2026-10-28T13:16:39.431Z","dateUpdated":"2026-10-28T13:16:39.431Z","assignerShortName":"suse","assignerOrgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","dateReserved":"2026-09-18T08:46:56.692Z"},"containers":{"cna":{"title":"X.Org Server GLX RenderLarge Heap Buffer Overflow","descriptions":[{"lang":"en","value":"A heap buffer overflow in handling GLX\nRenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context."}],"affected":[{"vendor":"x.orgg","product":"xorg-x11-server","packageName":"xorg-x11-server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.1.25","versionType":"rpm"}],"repo":"https://gitlab.freedesktop.org/xorg/xserver"},{"vendor":"x.org","product":"xwayland","packageName":"xwayland","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"24.1.14","versionType":"rpm"}],"repo":"https://gitlab.freedesktop.org/xorg/xserver"}],"references":[{"url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/2abe4632d793314d3d5f28c19583fb76019f5ce4","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":8.5,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122 Heap-based buffer overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"suse","orgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","dateUpdated":"2026-10-28T13:16:39.431Z"},"datePublic":"2026-10-28T13:11:00.000Z","impacts":[{"capecId":"CAPEC-175","descriptions":[{"lang":"en","value":"CAPEC-175 Code Inclusion"}]}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:x.orgg:xorg-x11-server:*:*:*:*:*:*:*:*","versionStartIncluding":"0","versionEndExcluding":"21.1.25"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*","versionStartIncluding":"0","versionEndExcluding":"24.1.14"}]}]}],"credits":[{"lang":"en","value":"Anonymous working with TrendAI Zero Day Initiative","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.5"}}}}}