Headline
Ubuntu Security Notice USN-7085-2
Ubuntu Security Notice 7085-2 - USN-7085-1 fixed a vulnerability in X.Org. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations in the X Keyboard Extension. An attacker could use this issue to cause the X Server to crash, leading to a denial of service, or possibly execute arbitrary code.
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Ubuntu Security Notice USN-7085-2
October 30, 2024
xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
X.Org X Server could be made to crash or run programs if it received
specially crafted data.
Software Description:
- xorg-server: X.Org X11 server
- xorg-server-hwe-18.04: X.Org X11 server
- xorg-server-hwe-16.04: X.Org X11 server
Details:
USN-7085-1 fixed a vulnerability in X.Org. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain memory operations in the X Keyboard Extension. An attacker could
use this issue to cause the X Server to crash, leading to a denial of
service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS
xserver-xorg-core 2:1.19.6-1ubuntu4.15+esm9
Available with Ubuntu Pro
xserver-xorg-core-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.11+esm1
Available with Ubuntu Pro
xwayland 2:1.19.6-1ubuntu4.15+esm9
Available with Ubuntu Pro
xwayland-hwe-18.04 2:1.20.8-2ubuntu2.2~18.04.11+esm1
Available with Ubuntu Pro
Ubuntu 16.04 LTS
xserver-xorg-core 2:1.18.4-0ubuntu0.12+esm14
Available with Ubuntu Pro
xserver-xorg-core-hwe-16.04 2:1.19.6-1ubuntu4.1~16.04.6+esm6
Available with Ubuntu Pro
xwayland 2:1.18.4-0ubuntu0.12+esm14
Available with Ubuntu Pro
xwayland-hwe-16.04 2:1.19.6-1ubuntu4.1~16.04.6+esm6
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make all
the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7085-2
https://ubuntu.com/security/notices/USN-7085-1
CVE-2024-9632
Related news
Xlibre Xnest versions 24.1.0 and 24.2.0 suffer from a buffer overflow vulnerability that affected Xorg.
Debian Linux Security Advisory 5800-1 - Jan-Niklas Sohn discovered that a heap-based buffer overflow in the _XkbSetCompatMap function in the X Keyboard Extension of the X.org X server may result in privilege escalation if the X server is running privileged.
Ubuntu Security Notice 7085-1 - Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations in the X Keyboard Extension. An attacker could use this issue to cause the X Server to crash, leading to a denial of service, or possibly execute arbitrary code.