A GRUB security update has been released for Gentoo Linux.

[ GLSA 202311-14 ] GRUB: Multiple Vulnerabilities

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202311-14
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: High
Title: GRUB: Multiple Vulnerabilities
Date: November 25, 2023
Bugs: #881413, #915187
ID: 202311-14

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

Multiple vulnerabilities have been discoverd in GRUB, which may lead to
secure boot circumvention or code execution.

Background
==========

GNU GRUB is a multiboot boot loader used by most Linux systems.

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

Package Vulnerable Unaffected
------------- ------------ ------------
sys-boot/grub < 2.06-r9 >= 2.06-r9

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

Multiple vulnerabilities have been discovered in GRUB. 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 GRUB users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-boot/grub-2.06-r9"

References
==========

[ 1 ] CVE-2022-2601
https://nvd.nist.gov/vuln/detail/CVE-2022-2601
[ 2 ] CVE-2022-3775
https://nvd.nist.gov/vuln/detail/CVE-2022-3775
[ 3 ] CVE-2023-4692
https://nvd.nist.gov/vuln/detail/CVE-2023-4692
[ 4 ] CVE-2023-4693
https://nvd.nist.gov/vuln/detail/CVE-2023-4693

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

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

https://security.gentoo.org/glsa/202311-14

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 2023 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