Medium · CVSS 5.3CVE-2026-93536

X.Org Server GestureBuildSprite Use-After-FreeCVE-2026-93536

Answer in brief

CVE-2026-93536 records a Medium severity (CVSS 5.3) vulnerability in X.Org Server GestureBuildSprite Use-After-Free. The current sources do not mark it as known exploited. The current feed maps x.org/xorg-x11-server (generic), x.org/xwayland (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 28, 2026Updated Oct 28, 2026Source checked Oct 28, 2026First seen by HOL Oct 28, 2026Material review Oct 28, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps x.org/xorg-x11-server (generic), x.org/xwayland (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
x.org/xorg-x11-servergeneric	>=0 <21.1.25	21.1.25
x.org/xwaylandgeneric	>=0 <24.1.14	24.1.14

Recommended response

Check inventory. Check lockfiles and deployed manifests for x.org/xorg-x11-server, x.org/xwayland.
Review the reported fix. Update x.org/xorg-x11-server to 21.1.25; x.org/xwayland to 24.1.14 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 28, 2026

Sources and claim methodology

Source referencegitlab.freedesktop.org

Upstream source description

A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially execute code.

Quoted source text, attributed separately from HOL analysis.