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[gentoo-announce] [ GLSA 202407-04 ] Pixman: Heap Buffer Overflow

Posted on 01 July 2024
Gentoo-announce

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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
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