CVE-2024-56738

Name of the Vulnerable Software and Affected Versions GNU GRUB (aka GRUB2) versions 2.12 and earlier

Description The issue is related to the use of a non-constant time algorithm for grub crypto memcmp, which allows side-channel attacks. This means that an attacker could potentially exploit the difference in time it takes for the comparison to occur, gaining unauthorized access to sensitive information.

Recommendations For GNU GRUB (aka GRUB2) versions 2.12 and earlier, consider updating to a version that utilizes a constant-time algorithm for grub crypto memcmp to prevent side-channel attacks. As a temporary workaround, restrict access to sensitive information that could be exploited through side-channel attacks until a patch is available.