A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "xvfb": "2:1.15.1-0ubuntu2.11+esm4", "xdmx": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-core-dbg": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-core-udeb-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xdmx-tools-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-dev": "2:1.15.1-0ubuntu2.11+esm4", "xorg-server-source": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-core": "2:1.15.1-0ubuntu2.11+esm4", "xserver-common": "2:1.15.1-0ubuntu2.11+esm4", "xnest-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xnest": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xephyr": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-xmir": "2:1.15.1-0ubuntu2.11+esm4", "xdmx-tools": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-dev-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-core-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xephyr-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xdmx-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xvfb-dbgsym": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-core-udeb": "2:1.15.1-0ubuntu2.11+esm4", "xserver-xorg-xmir-dbgsym": "2:1.15.1-0ubuntu2.11+esm4" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "xvfb": "2:1.18.4-0ubuntu0.12", "xserver-xorg-legacy": "2:1.18.4-0ubuntu0.12", "xdmx": "2:1.18.4-0ubuntu0.12", "xserver-xorg-core-dbg": "2:1.18.4-0ubuntu0.12", "xserver-xorg-core-udeb-dbgsym": "2:1.18.4-0ubuntu0.12", "xdmx-tools-dbgsym": "2:1.18.4-0ubuntu0.12", "xserver-xorg-dev": "2:1.18.4-0ubuntu0.12", "xnest-dbgsym": "2:1.18.4-0ubuntu0.12", "xserver-xorg-core": "2:1.18.4-0ubuntu0.12", "xserver-common": "2:1.18.4-0ubuntu0.12", "xwayland-dbgsym": "2:1.18.4-0ubuntu0.12", "xnest": "2:1.18.4-0ubuntu0.12", "xserver-xephyr": "2:1.18.4-0ubuntu0.12", "xserver-xorg-xmir": "2:1.18.4-0ubuntu0.12", "xdmx-tools": "2:1.18.4-0ubuntu0.12", "xmir-dbgsym": "2:1.18.4-0ubuntu0.12", "xwayland": "2:1.18.4-0ubuntu0.12", "xorg-server-source": "2:1.18.4-0ubuntu0.12", "xserver-xorg-core-dbgsym": "2:1.18.4-0ubuntu0.12", "xmir": "2:1.18.4-0ubuntu0.12", "xserver-xephyr-dbgsym": "2:1.18.4-0ubuntu0.12", "xdmx-dbgsym": "2:1.18.4-0ubuntu0.12", "xvfb-dbgsym": "2:1.18.4-0ubuntu0.12", "xserver-xorg-legacy-dbgsym": "2:1.18.4-0ubuntu0.12", "xserver-xorg-core-udeb": "2:1.18.4-0ubuntu0.12" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "xserver-xorg-dev-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xorg-server-source-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xmir-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xserver-xorg-legacy-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xwayland-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xserver-xephyr-hwe-16.04-dbgsym": "2:1.19.6-1ubuntu4.1~16.04.6", "xserver-xorg-core-hwe-16.04-dbgsym": "2:1.19.6-1ubuntu4.1~16.04.6", "xserver-xorg-core-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xserver-xorg-legacy-hwe-16.04-dbgsym": "2:1.19.6-1ubuntu4.1~16.04.6", "xserver-xephyr-hwe-16.04": "2:1.19.6-1ubuntu4.1~16.04.6", "xmir-hwe-16.04-dbgsym": "2:1.19.6-1ubuntu4.1~16.04.6", "xwayland-hwe-16.04-dbgsym": "2:1.19.6-1ubuntu4.1~16.04.6" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "xvfb": "2:1.19.6-1ubuntu4.9", "xserver-xorg-legacy": "2:1.19.6-1ubuntu4.9", "xdmx": "2:1.19.6-1ubuntu4.9", "xdmx-tools-dbgsym": "2:1.19.6-1ubuntu4.9", "xserver-xorg-dev": "2:1.19.6-1ubuntu4.9", "xnest-dbgsym": "2:1.19.6-1ubuntu4.9", "xserver-xorg-core": "2:1.19.6-1ubuntu4.9", "xserver-common": "2:1.19.6-1ubuntu4.9", "xwayland-dbgsym": "2:1.19.6-1ubuntu4.9", "xnest": "2:1.19.6-1ubuntu4.9", "xserver-xephyr": "2:1.19.6-1ubuntu4.9", "xserver-xorg-xmir": "2:1.19.6-1ubuntu4.9", "xdmx-tools": "2:1.19.6-1ubuntu4.9", "xmir-dbgsym": "2:1.19.6-1ubuntu4.9", "xwayland": "2:1.19.6-1ubuntu4.9", "xorg-server-source": "2:1.19.6-1ubuntu4.9", "xserver-xorg-core-dbgsym": "2:1.19.6-1ubuntu4.9", "xmir": "2:1.19.6-1ubuntu4.9", "xserver-xephyr-dbgsym": "2:1.19.6-1ubuntu4.9", "xdmx-dbgsym": "2:1.19.6-1ubuntu4.9", "xvfb-dbgsym": "2:1.19.6-1ubuntu4.9", "xserver-xorg-legacy-dbgsym": "2:1.19.6-1ubuntu4.9", "xserver-xorg-core-udeb": "2:1.19.6-1ubuntu4.9" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "xorg-server-source-hwe-18.04": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xephyr-hwe-18.04": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xorg-core-hwe-18.04-dbgsym": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xorg-legacy-hwe-18.04": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xorg-dev-hwe-18.04": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xephyr-hwe-18.04-dbgsym": "2:1.20.8-2ubuntu2.2~18.04.5", "xwayland-hwe-18.04-dbgsym": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xorg-core-hwe-18.04": "2:1.20.8-2ubuntu2.2~18.04.5", "xserver-xorg-legacy-hwe-18.04-dbgsym": "2:1.20.8-2ubuntu2.2~18.04.5", "xwayland-hwe-18.04": "2:1.20.8-2ubuntu2.2~18.04.5" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "xvfb": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xorg-legacy": "2:1.20.9-2ubuntu1.2~20.04.2", "xdmx": "2:1.20.9-2ubuntu1.2~20.04.2", "xdmx-tools-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xorg-dev": "2:1.20.9-2ubuntu1.2~20.04.2", "xorg-server-source": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xorg-core": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-common": "2:1.20.9-2ubuntu1.2~20.04.2", "xwayland-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xnest": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xephyr": "2:1.20.9-2ubuntu1.2~20.04.2", "xwayland": "2:1.20.9-2ubuntu1.2~20.04.2", "xdmx-tools": "2:1.20.9-2ubuntu1.2~20.04.2", "xnest-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xorg-core-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xephyr-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xdmx-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xvfb-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xorg-legacy-dbgsym": "2:1.20.9-2ubuntu1.2~20.04.2", "xserver-xorg-core-udeb": "2:1.20.9-2ubuntu1.2~20.04.2" } ] }