Ubuntu Security Notice 5744-1 - It was discovered that libICE was using a weak mechanism to generate the session cookies. A local attacker could possibly use this issue to perform a privilege escalation attack.
db2bc6e67b5d43a988889cd7cd83c4d10ce17d1e09a37c23332d21092dc926e4
Red Hat Security Advisory 2017-1865-01 - The X11 libraries provide library routines that are used within all X Window applications. The following packages have been upgraded to a later upstream version: libX11, libXaw, libXdmcp, libXfixes, libXfont, libXi, libXpm, libXrandr, libXrender, libXt, libXtst, libXv, libXvMC, libXxf86vm, libdrm, libepoxy, libevdev, libfontenc, libvdpau, libwacom, libxcb, libxkbfile, mesa, mesa-private-llvm, xcb-proto, xkeyboard-config, xorg-x11-proto-devel.
2454fbb7037ebbdc80b4a6947f9e13ee65e1806892b4a60080841fce649d6bdb
Gentoo Linux Security Advisory 201704-3 - Multiple vulnerabilities have been found in X.Org server and libraries, the worse of which allowing local attackers to execute arbitrary code. Versions less than 1.19.2 are affected.
b651dfb5c88b536bb774bed091405ef39ff35e25a8d671b35af02c5805d32f09
X.org suffers from privilege escalation, weak entropy, and use-after-free vulnerabilities.
f72f05abe9036269c3ae97121d5341b234d6db2cbe445c9d8643a82f22648e4d