NULL Pointer Dereference Affecting x11-xkb-utils package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.54% (45th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIANUNSTABLE-X11XKBUTILS-14174662
  • published4 Dec 2025
  • disclosed25 Aug 2018

Introduced: 25 Aug 2018

CVE-2018-15859  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable x11-xkb-utils.

NVD Description

Note: Versions mentioned in the description apply only to the upstream x11-xkb-utils package and not the x11-xkb-utils package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled.

CVSS Base Scores

version 3.1