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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
 <ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <b62e5c48-0005-44f9-8e29-9c014c479775@canonical.com>
Subject: [USN-7299-1] X.Org X Server vulnerabilities
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==========================================================================
Ubuntu Security Notice USN-7299-1
February 25, 2025

xorg-server, xwayland vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in X.Org X Server.

Software Description:
- xorg-server: X.Org X11 server
- xwayland: X server for running X clients under Wayland

Details:

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain memory operations. An attacker could use these issues 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 24.10
   xserver-xorg-core               2:21.1.13-2ubuntu1.2
   xwayland                        2:24.1.2-1ubuntu0.4

Ubuntu 24.04 LTS
   xserver-xorg-core               2:21.1.12-1ubuntu1.2
   xwayland                        2:23.2.6-1ubuntu0.4

Ubuntu 22.04 LTS
   xserver-xorg-core               2:21.1.4-2ubuntu1.7~22.04.13
   xwayland                        2:22.1.1-1ubuntu0.17

Ubuntu 20.04 LTS
   xserver-xorg-core               2:1.20.13-1ubuntu1~20.04.19
   xwayland                        2:1.20.13-1ubuntu1~20.04.19

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-7299-1
   CVE-2025-26594, CVE-2025-26595, CVE-2025-26596, CVE-2025-26597,
   CVE-2025-26598, CVE-2025-26599, CVE-2025-26600, CVE-2025-26601

Package Information:
   https://launchpad.net/ubuntu/+source/xorg-server/2:21.1.13-2ubuntu1.2
   https://launchpad.net/ubuntu/+source/xwayland/2:24.1.2-1ubuntu0.4
   https://launchpad.net/ubuntu/+source/xorg-server/2:21.1.12-1ubuntu1.2
   https://launchpad.net/ubuntu/+source/xwayland/2:23.2.6-1ubuntu0.4
   https://launchpad.net/ubuntu/+source/xorg-server/2:21.1.4-2ubuntu1.7~22.04.13
   https://launchpad.net/ubuntu/+source/xwayland/2:22.1.1-1ubuntu0.17
   https://launchpad.net/ubuntu/+source/xorg-server/2:1.20.13-1ubuntu1~20.04.19

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