NULL Pointer Dereference Affecting libxkbcommon package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.54% (45th percentile)

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  • Snyk IDSNYK-DEBIAN9-LIBXKBCOMMON-263430
  • published25 Sept 2018
  • disclosed25 Aug 2018

Introduced: 25 Aug 2018

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

How to fix?

There is no fixed version for Debian:9 libxkbcommon.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxkbcommon package and not the libxkbcommon package as distributed by Debian. See How to fix? for Debian: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