All vulnerabilities
CVE-2026-93536

xorg-x11-server: X.Org Server GestureBuildSprite Use-After-Free

x.org xorg-x11-server
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in21.1.25Also 24.1.14CVE List
Published28 Oct 2026Updated 28 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • xorg-x11-serveraffected: all versions before 21.1.25CVE List
  • xwaylandaffected: all versions before 24.1.14CVE List

References 1