{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93517", "assignerOrgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "state": "PUBLISHED", "assignerShortName": "suse", "dateReserved": "2026-09-18T08:46:56.692Z", "datePublished": "2026-10-28T13:16:39.431Z", "dateUpdated": "2026-10-28T13:16:39.431Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "shortName": "suse", "dateUpdated": "2026-10-28T13:16:39.431Z"}, "title": "X.Org Server GLX RenderLarge Heap Buffer Overflow", "datePublic": "2026-10-28T13:11:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-122", "description": "CWE-122 Heap-based buffer overflow", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-175", "descriptions": [{"lang": "en", "value": "CAPEC-175 Code Inclusion"}]}], "affected": [{"vendor": "x.orgg", "product": "xorg-x11-server", "packageName": "xorg-x11-server", "repo": "https://gitlab.freedesktop.org/xorg/xserver", "versions": [{"status": "affected", "version": "0", "lessThan": "21.1.25", "versionType": "rpm"}], "defaultStatus": "unaffected"}, {"vendor": "x.org", "product": "xwayland", "packageName": "xwayland", "repo": "https://gitlab.freedesktop.org/xorg/xserver", "versions": [{"status": "affected", "version": "0", "lessThan": "24.1.14", "versionType": "rpm"}], "defaultStatus": "unaffected"}], "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"}]}]}], "descriptions": [{"lang": "en", "value": "A heap buffer overflow in handling\u00a0GLX\nRenderLarge request\u00a0where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14\u00a0that could be\u00a0be triggered by an authenticated X client could cause crashes or code execution in X server context.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>A heap buffer overflow in handling&nbsp;GLX\nRenderLarge request&nbsp;where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14&nbsp;that could be&nbsp;be triggered by an authenticated X client could cause crashes or code execution in X server context.</p>"}]}], "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"}}], "credits": [{"lang": "en", "value": "Anonymous working with TrendAI Zero Day Initiative", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "xorg-x11-server", "product": "xorg-x11-server", "repo": "https://gitlab.freedesktop.org/xorg/xserver", "vendor": "x.orgg", "versions": [{"lessThan": "21.1.25", "status": "affected", "version": "0", "versionType": "rpm"}]}, {"defaultStatus": "unaffected", "packageName": "xwayland", "product": "xwayland", "repo": "https://gitlab.freedesktop.org/xorg/xserver", "vendor": "x.org", "versions": [{"lessThan": "24.1.14", "status": "affected", "version": "0", "versionType": "rpm"}]}], "source": "meissner@suse.de"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A heap buffer overflow in handling\u00a0GLX\nRenderLarge request\u00a0where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14\u00a0that could be\u00a0be triggered by an authenticated X client could cause crashes or code execution in X server context."}], "id": "CVE-2026-93517", "lastModified": "2026-10-28T14:17:08.843", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "meissner@suse.de", "type": "Secondary"}]}, "published": "2026-10-28T14:17:08.843", "references": [{"source": "meissner@suse.de", "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/2abe4632d793314d3d5f28c19583fb76019f5ce4"}], "sourceIdentifier": "meissner@suse.de", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "meissner@suse.de", "type": "Primary"}]}

{"bugzilla": {"description": "xorg-x11-server: GLX sanitization flaw", "id": "2545246", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545246"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in xorg-x11-server. The GLX (OpenGL Extension to the X Window System) interface fails to verify that incoming data sizes do not exceed allocated buffer limits when handling large rendering requests. An authenticated local client can exploit this vulnerability by sending a specially crafted request, triggering a heap-based buffer overflow. Successful exploitation can result in arbitrary code execution with the privileges of the X server or cause a Denial of Service (DoS) by crashing the application."], "name": "CVE-2026-93517", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "xorg-x11-server-Xwayland", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "xorg-x11-server-Xwayland", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "xorg-x11-server-Xwayland", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-07T12:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93517\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93517"], "statement": "This vulnerability is rated as Moderate impact by Red Hat Product Security because exploitation is restricted to authenticated local users who have an active session connected to an X11 or Xwayland display server. Default headless and server installations of Red Hat Enterprise Linux do not run a graphical server and are inherently unexposed to this flaw. In workstation and desktop environments, the risk is bounded by the requirement of existing local client access, preventing remote or unauthenticated exploitation without prior compromise.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 90.0, "source": "matching"}]}, "product": "x_server", "vendor": "x.org"}], "created": "2026-10-08T14:15:15.007314+00:00", "updated": "2026-10-18T19:45:27.857813+00:00", "vendors": ["x.org", "x.org$PRODUCT$x_server"]}