[USN-5718-1] pixman vulnerability

[Marc Deslauriers]

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

pixman vulnerability
==========================================================================

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
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