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