NULL Pointer Dereference Affecting xkbcomp package, versions *


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.54% (45th percentile)

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  • Snyk IDSNYK-RHEL9-XKBCOMP-14157241
  • published2 Dec 2025
  • disclosed26 Jun 2017

Introduced: 26 Jun 2017

CVE-2018-15861  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 xkbcomp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xkbcomp package and not the xkbcomp package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Unchecked NULL pointer usage 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 that triggers an xkb_intern_atom failure.

CVSS Base Scores

version 3.1