PublicDateAtUSN: 2018-08-25
Candidate: CVE-2018-15858
PublicDate: 2018-08-25 21:29:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15858
 https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html
 https://ubuntu.com/security/notices/USN-3786-1
 https://ubuntu.com/security/notices/USN-3786-2
Description:
 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.
Ubuntu-Description:
Notes:
 leosilva> code in trusty is quite different.
 leosilva> portions of the code affected are not present so
 leosilva> changing to not-affected.
Bugs:
 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907302
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H [5.5 MEDIUM]


Patches_libxkbcommon:
 vendor: https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f
upstream_libxkbcommon: released (0.8.2-1)
precise/esm_libxkbcommon: DNE
trusty_libxkbcommon: not-affected
trusty/esm_libxkbcommon: DNE (trusty was not-affected)
xenial_libxkbcommon: released (0.5.0-1ubuntu2.1)
esm-infra/xenial_libxkbcommon: released (0.5.0-1ubuntu2.1)
bionic_libxkbcommon: released (0.8.0-1ubuntu0.1)
cosmic_libxkbcommon: not-affected (0.8.2-1)
devel_libxkbcommon: not-affected (0.8.2-1)