Bug#1102217: grub2: CVE-2024-56738

[Salvatore Bonaccorso]

Source: grub2
Version: 2.12-7
Severity: important
Tags: security upstream
Forwarded: https://savannah.gnu.org/bugs/?66603
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for grub2.

CVE-2024-56738[0]:
| GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time
| algorithm for grub_crypto_memcmp and thus allows side-channel
| attacks.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2024-56738
    https://www.cve.org/CVERecord?id=CVE-2024-56738
[1] https://savannah.gnu.org/bugs/?66603
[2] https://bugzilla.suse.com/show_bug.cgi?id=1234959#c2

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore