CVE-2018-15858

Published: 25 August 2018

Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
libxkbcommon
Launchpad, Ubuntu, Debian
Upstream
Released (0.8.2-1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.8.0-1ubuntu0.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (0.5.0-1ubuntu2.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected)
Patches:
Vendor: https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f