Ubuntu alert USN-7299-4 (xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04)

From:
             
 
"Leonidas S. Barbosa" <leo.barbosa@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7299-4] X.Org X Server regression
Date:
             
 
Mon, 17 Mar 2025 07:22:43 -0300
Message-ID:
             
 
<20250317102243.GA1933257@d4rkl41n>
==========================================================================
Ubuntu Security Notice USN-7299-4
March 17, 2025

xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 regression
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

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

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-7299-2 fix vulnerabilities in X.Org X Server. This fix caused
a regression in Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. This update
fix the regression and re-apply the fix for the CVE listed.

We apologize for the inconvenience.

Original advisory 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 18.04 LTS
  xserver-xorg-core               2:1.19.6-1ubuntu4.15+esm12
                                  Available with Ubuntu Pro
  xserver-xorg-core-hwe-18.04     2:1.20.8-2ubuntu2.2~18.04.11+esm4
                                  Available with Ubuntu Pro
  xwayland                        2:1.19.6-1ubuntu4.15+esm12
                                  Available with Ubuntu Pro
  xwayland-hwe-18.04              2:1.20.8-2ubuntu2.2~18.04.11+esm4
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  xserver-xorg-core               2:1.18.4-0ubuntu0.12+esm17
                                  Available with Ubuntu Pro
  xserver-xorg-core-hwe-16.04     2:1.19.6-1ubuntu4.1~16.04.6+esm9
                                  Available with Ubuntu Pro
  xwayland                        2:1.18.4-0ubuntu0.12+esm17
                                  Available with Ubuntu Pro
  xwayland-hwe-16.04              2:1.19.6-1ubuntu4.1~16.04.6+esm9
                                  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-7299-4
  https://ubuntu.com/security/notices/USN-7299-3
  https://ubuntu.com/security/notices/USN-7299-2
  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,
  https://launchpad.net/bugs/2102209



Attachment: signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE-----
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=uHh3
-----END PGP SIGNATURE-----


Attachment: None (type=text/plain)