GLSA 202104-05: GRUB: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	GRUB: Multiple vulnerabilities
Date:	04/30/2021
Bugs:	#734654, #773991
ID:	202104-05

Synopsis

Multiple vulnerabilities have been found in GRUB, the worst might allow for circumvention of UEFI Secure Boot.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-devel/grub	< 2.06_rc1	>= 2.06_rc1	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-devel/grub-2.06_rc1"

After upgrading, make sure to run the grub-install command with options appropriate for your system. See the GRUB Quick Start guide in the references below for examples. 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-202104-05.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.