{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56000","assignerOrgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","state":"PUBLISHED","assignerShortName":"suse","dateReserved":"2026-06-18T09:26:55.988Z","datePublished":"2026-07-08T07:36:15.357Z","dateUpdated":"2026-07-08T12:42:16.061Z"},"containers":{"cna":{"providerMetadata":{"orgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","shortName":"suse","dateUpdated":"2026-07-08T08:12:50.380Z"},"title":"xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()","datePublic":"2026-07-08T07:30:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-416","description":"CWE-416 Use after free","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-234","descriptions":[{"lang":"en","value":"CAPEC-234 Hijacking a privileged process"}]}],"affected":[{"vendor":"X.Org","product":"xorg-x11-server","packageName":"xorg-x11-server","repo":"https://gitlab.freedesktop.org/xorg/xserver/","versions":[{"status":"affected","version":"0","lessThan":"21.1.24","versionType":"rpm"}],"defaultStatus":"unaffected"},{"vendor":"X.Org","product":"xwayland","packageName":"xwayland","repo":"https://gitlab.freedesktop.org/xorg/xserver/","versions":[{"status":"affected","version":"0","lessThan":"24.1.13","versionType":"rpmver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory.","supportingMedia":[{"type":"text/html","base64":false,"value":"Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory."}]}],"references":[{"url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/2779affbdb4354e894f490e56f962527d6125043","tags":["patch"]},{"url":"https://www.openwall.com/lists/oss-security/2026/07/08/2","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"HIGH","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":"CRITICAL","baseScore":9,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}}],"credits":[{"lang":"en","value":"Anonymous working with Trend Micro Zero Day Initiative.","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T12:41:28.146819Z","id":"CVE-2026-56000","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-08T12:42:16.061Z"}}]}}