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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.

Notes

AuthorNote
leosilva
code in trusty is quite different.
portions of the code affected are not present so
changing to not-affected.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
libxkbcommon
Launchpad, Ubuntu, Debian
bionic
Released (0.8.0-1ubuntu0.1)
cosmic Not vulnerable
(0.8.2-1)
precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream
Released (0.8.2-1)
xenial
Released (0.5.0-1ubuntu2.1)
Patches:
vendor: https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f