CVE catalog

CVE-2024-56738

grub2: CVE-2024-56738

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Published: Dec 29, 2024, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.40% · Oct 25, 2026

GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	grub2	sid	`2.14-4`	vulnerable
Debian	grub2	forky	`2.14-4`	vulnerable
Debian	grub2	trixie	`2.12-9+deb13u2`	vulnerable
Debian	grub2	bookworm	`2.06-13+deb12u2`	vulnerable
Debian	grub2	bookworm-security	`2.06-13+deb12u1`	vulnerable
Opensuse	grub2	leap 16.0	`2.12-160000.3.1`	fixed
Opensuse	grub2	tumbleweed	`2.12-56.1`	fixed
Suse	grub2	linux enterprise server 16.0	`2.12-160000.3.1`	fixed
Suse	grub2	linux enterprise server for sap applications 16.0	`2.12-160000.3.1`	fixed
Suse	grub2	linux micro 6.0	`2.12~rc1-7.1`	fixed
Suse	grub2	linux micro 6.2	`2.12-160000.3.1`	fixed
Suse	grub2	linux enterprise module for basesystem 15 sp7	`2.12-150700.19.13.2`	fixed
Suse	grub2	linux enterprise module for server applications 15 sp7	`2.12-150700.19.13.2`	fixed
Suse	grub2	linux enterprise server ltss extended security 12 sp5	`2.02-190.1`	fixed
Suse	grub2	linux enterprise micro 5.5	`2.06-150500.29.53.1`	fixed
Suse	grub2	linux enterprise micro 5.3	`2.06-150400.11.63.1`	fixed
Suse	grub2	linux enterprise micro 5.4	`2.06-150400.11.63.1`	fixed
Suse	grub2	linux enterprise micro 5.1	`2.04-150300.3.14.2`	fixed
Suse	grub2	linux enterprise micro 5.2	`2.04-150300.22.58.1`	fixed
Suse	grub2	linux enterprise module for basesystem 15 sp6	`2.12-150600.8.34.1`	fixed
Suse	grub2	linux enterprise module for server applications 15 sp6	`2.12-150600.8.34.1`	fixed
Opensuse	grub2	leap 15.6	`2.12-150600.8.34.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	grub2	source	sid	`(unfixed)`	not yet assigned	Not reported	[1102217]
Debian	grub2	source	forky	`(unfixed)`	not yet assigned	Not reported	[1102217]
Debian	grub2	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1102217]
Debian	grub2	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1102217]
Opensuse	grub2	rpm	leap 16.0	`2.12-160000.3.1`	Not reported	OPENSUSE-SU-2025:20163-1	Not reported
Opensuse	grub2	rpm	tumbleweed	`2.12-56.1`	Not reported	OPENSUSE-SU-2025:15400-1	Not reported
Suse	grub2	rpm	linux enterprise server 16.0	`2.12-160000.3.1`	Not reported	SUSE-SU-2025:21212-1	Not reported
Suse	grub2	rpm	linux enterprise server for sap applications 16.0	`2.12-160000.3.1`	Not reported	SUSE-SU-2025:21212-1	Not reported
Suse	grub2	rpm	linux micro 6.0	`2.12~rc1-7.1`	Not reported	SUSE-SU-2025:20654-1	Not reported
Suse	grub2	rpm	linux micro 6.2	`2.12-160000.3.1`	Not reported	SUSE-SU-2025:21223-1	Not reported
Suse	grub2	rpm	linux enterprise module for basesystem 15 sp7	`2.12-150700.19.13.2`	Not reported	SUSE-SU-2025:02813-1	Not reported
Suse	grub2	rpm	linux enterprise module for server applications 15 sp7	`2.12-150700.19.13.2`	Not reported	SUSE-SU-2025:02813-1	Not reported
Suse	grub2	rpm	linux enterprise server ltss extended security 12 sp5	`2.02-190.1`	Not reported	SUSE-SU-2025:02725-1	Not reported
Suse	grub2	rpm	linux enterprise micro 5.5	`2.06-150500.29.53.1`	Not reported	SUSE-SU-2025:02706-1	Not reported
Suse	grub2	rpm	linux enterprise micro 5.3	`2.06-150400.11.63.1`	Not reported	SUSE-SU-2025:02727-1	Not reported
Suse	grub2	rpm	linux enterprise micro 5.4	`2.06-150400.11.63.1`	Not reported	SUSE-SU-2025:02727-1	Not reported
Suse	grub2	rpm	linux enterprise micro 5.1	`2.04-150300.3.14.2`	Not reported	SUSE-SU-2025:02724-1	Not reported
Suse	grub2	rpm	linux enterprise micro 5.2	`2.04-150300.22.58.1`	Not reported	SUSE-SU-2025:02705-1	Not reported
Suse	grub2	rpm	linux enterprise module for basesystem 15 sp6	`2.12-150600.8.34.1`	Not reported	SUSE-SU-2025:02772-1	Not reported
Suse	grub2	rpm	linux enterprise module for server applications 15 sp6	`2.12-150600.8.34.1`	Not reported	SUSE-SU-2025:02772-1	Not reported
Opensuse	grub2	rpm	leap 15.6	`2.12-150600.8.34.1`	Not reported	SUSE-SU-2025:02772-1	Not reported

[Debian bug #1102217]

Notes

[trixie] grub2: Minor issue, revisit when fixed upstream [bookworm] grub2: Minor issue, revisit when fixed upstream

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[grub2]Affected
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub2-common]Affected
Source package: [grub2]
Details (6)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-common]Affected
Source package: [grub2]
Details (6)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-coreboot]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-coreboot-bin]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-coreboot-dbg]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi]Affected
Source package: [grub2]
Details (6)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-amd64]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-amd64-bin]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-amd64-dbg]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-amd64-signed-template]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-arm64]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-arm64-bin]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-arm64-dbg]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-arm64-signed-template]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · arm64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · arm64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-ia32]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-ia32-bin]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-efi-ia32-dbg]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-emu]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
[grub-emu-dbg]Affected
Source package: [grub2]
Details (3)
- 2.06-13+deb12u2 · amd64 · bookworm
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.12-1~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12
- 2.06-13+deb12u1 · amd64 · bookworm-security
  Affected
  dsa · grub2 · debian · bookworm; dsa · grub2 · debian · 12

Next results

Observed: Oct 27, 2026, 12:01:48 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]