CVE-2018-15858

NameCVE-2018-15858
DescriptionUnchecked 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs907302

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxkbcommon (PTS)bullseye1.0.3-2fixed
bookworm1.5.0-1fixed
sid, trixie1.6.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxkbcommonsource(unstable)0.8.2-1low907302

Notes

[stretch] - libxkbcommon <ignored> (Minor issue)
[jessie] - libxkbcommon <no-dsa> (Minor issue)
https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html

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