A pixman security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

USN-5718-1: pixman vulnerability

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Ubuntu Security Notice USN-5718-1
November 08, 2022

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

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

pixman could be made to crash or run programs if it processed specially
crafted input.

Software Description:
- pixman: pixel-manipulation library for X and cairo

Details:

Maddie Stone discovered that pixman incorrectly handled certain memory
operations. A remote attacker could use this issue to cause pixman to
crash, resulting in 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 22.10:
libpixman-1-0 0.40.0-1ubuntu0.22.10.1

Ubuntu 22.04 LTS:
libpixman-1-0 0.40.0-1ubuntu0.22.04.1

Ubuntu 20.04 LTS:
libpixman-1-0 0.38.4-0ubuntu2.1

Ubuntu 18.04 LTS:
libpixman-1-0 0.34.0-2ubuntu0.1

After a standard system update you need to restart your session to make all
the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5718-1
CVE-2022-44638

Package Information:
https://launchpad.net/ubuntu/+source/pixman/0.40.0-1ubuntu0.22.10.1
https://launchpad.net/ubuntu/+source/pixman/0.40.0-1ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/pixman/0.38.4-0ubuntu2.1
https://launchpad.net/ubuntu/+source/pixman/0.34.0-2ubuntu0.1