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CVE-2026-93522

X.Org Server Glamor CopyArea Heap Buffer Overflow

HIGH
7.8
CVSS Score
Published: October 28, 2026 at 04:03 PM UTC
Updated: October 28, 2026 at 04:17 PM UTC
2 products affected across 1 vendorXwaylandxorg-x11-server

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Severity
HIGH7.8

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Patch
Source: cverecord
https://gitlab.freedesktop.org/xorg/xserver/-/commit/ad26c26bf795e6464f74c8ef5bb1d41403d877ab

CVSS

7.8HIGHsuse
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-122

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