CVE-2018-15861 (NVD)

2018-08-25

Unchecked NULL pointer usage 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 that triggers an xkb_intern_atom failure.

Products Ubuntu_linux, Libxkbcommon, Xkbcommon
Type NULL Pointer Dereference (CWE-476)
First patch https://github.com/xkbcommon/libxkbcommon/commit/38e1766bc6e20108948aec8a0b222a4bad0254e9
Relevant file/s ./src/xkbcomp/expr.c (modified, +1, -1)
Links • https://security.gentoo.org/glsa/201810-05
• https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html
• https://access.redhat.com/errata/RHSA-2019:2079
• https://usn.ubuntu.com/3786-1/
• https://usn.ubuntu.com/3786-2/

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