CVE-2026-93522

X.Org Server Glamor CopyArea Heap Buffer Overflow

Published Oct 28, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server context.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-119
Type Values Removed Values Added
Description No description is available for this CVE. A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server context.
Title glamor: size tmp_bits buffer for source coordinate range in upload_boxes X.Org Server Glamor CopyArea Heap Buffer Overflow
First Time appeared X.org
X.org xorg-x11-server
X.org xwayland
Weaknesses CWE-122
CPEs cpe:2.3:a:x.org:xorg-x11-server:*:*:*:*:*:*:*:*
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*
Vendors & Products X.org
X.org xorg-x11-server
X.org xwayland
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Weaknesses CWE-119
Type Values Removed Values Added
Description No description is available for this CVE.
Title glamor: size tmp_bits buffer for source coordinate range in upload_boxes
References
Metrics threat_severity

None

threat_severity

Important

Weaknesses

Sources

Status
PUBLISHED
Assigner
suse
Published
Updated
Nov 5, 2026, 6:54 PM
Reserved
Sep 18, 2026, 8:46 AM
Status
Awaiting Analysis
Published
Oct 28, 2026, 4:17 PM
Modified
Nov 5, 2026, 7:17 PM
Severity
Important
Public date
Oct 7, 2026, 12:00 PM