NULL Pointer Dereference Affecting libxkbcommon package, versions <0.5.0-1ubuntu2.1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.54% (45th percentile)

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  • Snyk IDSNYK-UBUNTU1604-LIBXKBCOMMON-263433
  • 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?

Upgrade Ubuntu:16.04 libxkbcommon to version 0.5.0-1ubuntu2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxkbcommon package and not the libxkbcommon package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 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