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Gentoo Linux Security Advisory                           GLSA 202505-07
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                                           https://security.gentoo.org/
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 Severity: High
    Title: FreeType: Remote Code Execution
     Date: May 14, 2025
     Bugs: #951286
       ID: 202505-07

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Synopsis
=======
A vulnerability has been discovered in FreeType, which can lead to
remote code execution.

Background
=========
FreeType is a high-quality and portable font engine.

Affected packages
================
Package              Vulnerable    Unaffected
-------------------  ------------  ------------
media-libs/freetype  < 2.13.1      >= 2.13.1

Description
==========
Multiple vulnerabilities have been discovered in FreeType. Please review
the CVE identifiers referenced below for details.

Impact
=====
An out of bounds write exists in FreeType when attempting to parse font
subglyph structures related to TrueType GX and variable font files. The
vulnerable code assigns a signed short value to an unsigned long and
then adds a static value causing it to wrap around and allocate too
small of a heap buffer. The code then writes up to 6 signed long
integers out of bounds relative to this buffer. This may result in
arbitrary code execution. This vulnerability may have been exploited in
the wild.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All FreeType users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-libs/freetype-2.13.1"

References
=========
[ 1 ] CVE-2025-27363
      https://nvd.nist.gov/vuln/detail/CVE-2025-27363

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

 https://security.gentoo.org/glsa/202505-07

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 2025 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