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[gentoo-announce] [ GLSA 202608-27 ] GNU screen: Multiple Vulnerabilities

Posted on 26 August 2026
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202608-27
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https://security.gentoo.org/
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Severity: High
Title: GNU screen: Multiple Vulnerabilities
Date: August 26, 2026
Bugs: #955907
ID: 202608-27

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Synopsis
========
Multiple vulnerabilities have been found in GNU screen.

Background
==========
GNU screen is a full-screen window manager that multiplexes a physical
terminal between several processes, typically interactive shells.

Affected packages
=================
Package Vulnerable Unaffected
--------------- ------------ ------------
app-misc/screen < 4.9.1-r2 >= 4.9.1-r2

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

Impact
======
Please review the referenced CVE identifiers for details.

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

Resolution
==========
All GNU screen users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-misc/screen-4.9.1-r2"

References
==========
[ 1 ] CVE-2025-23395
https://nvd.nist.gov/vuln/detail/CVE-2025-23395
[ 2 ] CVE-2025-46802
https://nvd.nist.gov/vuln/detail/CVE-2025-46802
[ 3 ] CVE-2025-46803
https://nvd.nist.gov/vuln/detail/CVE-2025-46803
[ 4 ] CVE-2025-46804
https://nvd.nist.gov/vuln/detail/CVE-2025-46804
[ 5 ] CVE-2025-46805
https://nvd.nist.gov/vuln/detail/CVE-2025-46805

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

https://security.gentoo.org/glsa/202608-27

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 2026 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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