In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp.
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xorg-server-source-lts-xenial" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xserver-xephyr-lts-xenial" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xserver-xephyr-lts-xenial-dbgsym" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xserver-xorg-core-lts-xenial" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xserver-xorg-core-lts-xenial-dbg" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xserver-xorg-core-lts-xenial-dbgsym" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xserver-xorg-dev-lts-xenial" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xwayland-lts-xenial" }, { "binary_version": "2:1.18.3-1ubuntu2.3~trusty3", "binary_name": "xwayland-lts-xenial-dbgsym" } ] }
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xmir-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xmir-hwe-16.04-dbgsym" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xorg-server-source-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xephyr-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xephyr-hwe-16.04-dbgsym" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xorg-core-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xorg-core-hwe-16.04-dbg" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xorg-core-hwe-16.04-dbgsym" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xorg-dev-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xorg-legacy-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xserver-xorg-legacy-hwe-16.04-dbgsym" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xwayland-hwe-16.04" }, { "binary_version": "2:1.19.3-1ubuntu1~16.04.3", "binary_name": "xwayland-hwe-16.04-dbgsym" } ] }