All vulnerabilities
CVE-2026-93518

xorg-x11-server: X.Org Server XKB ResizeKeyType Numeric Truncation

x.org xorg-x11-server
Open in ThreatlineRecord JSON
CVSS
7.8High
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

An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.

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