CVE-2018-15859

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.

Score

CVSS 3.0 5.5 Medium

Status

Modified - cve@mitre.org

Published

2018-08-25

Last modified

2024-08-05

Weaknesses

CWE-476

Affected products

• Ubuntu Linux (Canonical)
• Libxkbcommon (Xkbcommon)
• Xkbcommon (Xkbcommon)

References

• https://access.redhat.com/errata/RHSA-2019:2079
• https://github.com/xkbcommon/libxkbcommon/commit/bb4909d2d8fa6b08155e449986a478101e2b2634
• https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html
• https://security.gentoo.org/glsa/201810-05
• https://usn.ubuntu.com/3786-1/
• https://usn.ubuntu.com/3786-2/