grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled

A flaw was found in grub2. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this...

RHEL 8 : grub2 (RHSA-2021:0697)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0697 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

RHEL 8 : grub2 (RHSA-2021:0698)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0698 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...