CVE-2018-15859

Description

Unchecked NULL pointer usage when parsing invalid atoms 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, because lookup failures are mishandled.

References

https://usn.ubuntu.com/3786-2/

https://usn.ubuntu.com/3786-1/

https://security.gentoo.org/glsa/201810-05

https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html

https://github.com/xkbcommon/libxkbcommon/commit/bb4909d2d8fa6b08155e449986a478101e2b2634

https://access.redhat.com/errata/RHSA-2019:2079

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3