A MuPDF security update has been released for Gentoo Linux.

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Gentoo Linux Security Advisory GLSA 202105-30
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  https://security.gentoo.org/
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Severity: Low
Title: MuPDF: Multiple vulnerabilities
Date: May 26, 2021
Bugs: #747151, #772311
ID: 202105-30

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Synopsis
========

Multiple vulnerabilities have been found in MuPDF, the worst of which
could result in a Denial of Service condition.

Background
==========

MuPDF is a lightweight PDF viewer and toolkit written in portable C.

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

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Package / Vulnerable / Unaffected
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1 app-text/mupdf < 1.18.0-r3 >= 1.18.0-r3

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

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

Impact
======

A remote attacker could entice a user to open a specially crafted PDF
document using MuPDF, possibly resulting in a Denial of Service
condition or have other unspecified impact.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MuPDF users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/mupdf-1.18.0-r3"

References
==========

[ 1 ] CVE-2020-26519
  https://nvd.nist.gov/vuln/detail/CVE-2020-26519
[ 2 ] CVE-2021-3407
  https://nvd.nist.gov/vuln/detail/CVE-2021-3407

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

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

  https://security.gentoo.org/glsa/202105-30

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 2021 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