CVE-2018-15862 (NVD)

2018-08-25

Unchecked NULL pointer usage in LookupModMask 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 with invalid virtual modifiers.

Products Ubuntu_linux, Libxkbcommon, Xkbcommon
Type NULL Pointer Dereference (CWE-476)
First patch https://github.com/xkbcommon/libxkbcommon/commit/4e2ee9c3f6050d773f8bbe05bc0edb17f1ff8371
Relevant file/s ./src/xkbcomp/expr.c (modified, +2)
Links • https://security.gentoo.org/glsa/201810-05
• https://access.redhat.com/errata/RHSA-2019:2079
• https://usn.ubuntu.com/3786-1/
• https://usn.ubuntu.com/3786-2/
• https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html

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