GLSA 202209-12: GRUB: Multiple Vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	GRUB: Multiple Vulnerabilities
Date:	09/25/2022
Bugs:	#850535, #835082
ID:	202209-12

Synopsis

Multiple vulnerabilities have been discovered in GRUB, the worst of which may allow for secureboot bypass.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-boot/grub	< 2.06	>= 2.06	All supported architectures

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-r3"

After upgrading, make sure to run the grub-install command with options appropriate for your system. See the GRUB2 Gentoo Wiki page for directions. Your system will be vulnerable until this action is performed.

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202209-12.xml

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.