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.
| Software | From | Fixed in |
|---|---|---|
| xkbcommon / xkbcommon | - | 0.8.1.x |
| xkbcommon / libxkbcommon | - | 0.8.1.x |
| canonical / ubuntu_linux | 16.04 | 16.04.x |
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 18.04 | 18.04.x |
- 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/
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