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Ubuntu Security Notice USN-5718-2
November 30, 2022

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

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

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:

USN-5718-1 fixed a vulnerability in pixman. This update provides the
corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory 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 16.04 ESM:
   libpixman-1-0                   0.33.6-1ubuntu0.1~esm1
   libpixman-1-dev                 0.33.6-1ubuntu0.1~esm1

Ubuntu 14.04 ESM:
   libpixman-1-0                   0.30.2-2ubuntu1.2+esm1
   libpixman-1-dev                 0.30.2-2ubuntu1.2+esm1

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

References:
   https://ubuntu.com/security/notices/USN-5718-2
   https://ubuntu.com/security/notices/USN-5718-1
   CVE-2022-44638