Gnu Grub · Gnu Grub · 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.