CVE-2026-93536

X.Org Server GestureBuildSprite Use-After-Free

CVE-2026-93536 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-93536, released October 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.3

medium

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0017

5th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
xorg-server · Debian 14	2:21.1.25-1	DEBIAN-CVE-2026-93536	Oct 12, 2026
xorg-x11-server · sles 15.6	21.1.11-150600.5.34.1	SUSE-SU-2026:4647-1	Nov 7, 2026
xorg-x11-server · sles 15.7	21.1.15-150700.5.25.1	SUSE-SU-2026:4646-1	Nov 7, 2026
xorg-x11-server-Xephyr · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xephyr-debuginfo · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xnest · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xnest-debuginfo · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xorg · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xorg-debuginfo · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xvfb · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xvfb-debuginfo · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-Xwayland · amzn 2023	24.1.3-1.amzn2023.0.7	ALAS2023-2026-3261	Nov 7, 2026
xorg-x11-server-Xwayland-debuginfo · amzn 2023	24.1.3-1.amzn2023.0.7	ALAS2023-2026-3261	Nov 7, 2026
xorg-x11-server-Xwayland-debugsource · amzn 2023	24.1.3-1.amzn2023.0.7	ALAS2023-2026-3261	Nov 7, 2026
xorg-x11-server-Xwayland-devel · amzn 2023	24.1.3-1.amzn2023.0.7	ALAS2023-2026-3261	Nov 7, 2026
xorg-x11-server-common · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-debuginfo · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-debugsource · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-devel · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xorg-x11-server-source · amzn 2023	21.1.13-5.amzn2023.0.12	ALAS2023-2026-3260	Nov 7, 2026
xwayland · Debian 14	2:24.1.14-1	DEBIAN-CVE-2026-93536	Oct 12, 2026
xwayland · opensuse-leap 16.0	24.1.6-160000.7.1	OPENSUSE-SU-2026:22085-1	Nov 7, 2026
xwayland · sles 15.7	24.1.5-150700.3.25.1	SUSE-SU-2026:4835-1	Nov 7, 2026
xwayland · sles 16.0	24.1.6-160000.7.1	SUSE-SU-2026:24230-1	Nov 7, 2026

Details

Published
October 12, 2026
Weakness
Heap-based Buffer Overflow
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93536

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