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Gentoo Linux Security Advisory                           GLSA 202407-04
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Pixman: Heap Buffer Overflow
     Date: July 01, 2024
     Bugs: #879207
       ID: 202407-04

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Synopsis
========

A vulnerability has been discovered in Pixman, which can lead to a heap
buffer overflow.

Background
==========

Pixman is a pixel manipulation library.

Affected packages
=================

Package          Vulnerable    Unaffected
---------------  ------------  ------------
x11-libs/pixman  < 0.42.2      >= 0.42.2

Description
===========

A vulnerability has been discovered in Pixman. Please review the CVE
identifiers referenced below for details.

Impact
======

An out-of-bounds write (aka heap-based buffer overflow) in
rasterize_edges_8 can occur due to an integer overflow in
pixman_sample_floor_y.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Pixman users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=x11-libs/pixman-0.42.2"

References
==========

[ 1 ] CVE-2022-44638
      https://nvd.nist.gov/vuln/detail/CVE-2022-44638

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202407-04

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5