CVE-2024-56738
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
CVE-2024-56738 is fixed in grub2 on 1 platform, first by SUSE-SU-2025:02772-1, released August 12, 2025. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.7
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0041
35th percentile
Fixed side-channel attack due to not
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| grub2 · opensuse-leap 15.6 | 2.12-150600.8.34.1 | SUSE-SU-2025:02772-1 | Aug 12, 2025 |
| grub2 · opensuse-leap 16.0 | 2.12-160000.3.1 | OPENSUSE-SU-2025:20163-1 | Dec 15, 2025 |
| grub2 · sles 15.6 | 2.12-150600.8.34.1 | SUSE-SU-2025:02772-1 | Aug 12, 2025 |
| grub2 · sles 15.7 | 2.12-150700.19.13.2 | SUSE-SU-2025:02813-1 | Aug 15, 2025 |
| grub2 · sles 16.0 | 2.12-160000.3.1 | SUSE-SU-2025:21212-1 | Dec 15, 2025 |
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