Description
A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GNU | grub2 | ≤ 2.14 | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | grub2 | 2.14-1 | — |
| Debian 13 | grub2 | No fix yet | — |
| Debian 12 | grub2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | grub2-signed +1 | No fix yet | — |
| Ubuntu 26.04 LTS | grub2-signed +1 | No fix yet | — |
| Ubuntu 25.10 | grub2-signed +1 | No fix yet | — |
| Ubuntu 24.04 LTS | grub2-signed +1 | No fix yet | — |
| Ubuntu 22.04 LTS | grub2-signed +1 | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | grub2-signed +1 | No fix yet | — |
| Ubuntu 18.04 LTS | grub2-signed +1 | No fix yet | — |
| Ubuntu 16.04 LTS | grub2-signed +1 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | grub2 +1 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | grub2 | 2.12-150700.19.19.1 | SUSE-SU-2025:4305-1 |
| SLES 15 SP6 | grub2 | 2.12-150600.8.44.2 | SUSE-SU-2025:4196-1 |
| SLES 12 SP5 | grub2 | 2.02-193.1 | SUSE-SU-2025:4197-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | grub2 | 2.12-160000.3.1 | SUSE-SU-2025:21212-1 |
| SLES 16.0 | grub2 | 2.12-160000.3.1 | SUSE-SU-2025:21212-1 |
| SLE Micro 6.2 | grub2 | 2.12-160000.3.1 | SUSE-SU-2025:21223-1 |
| SLE Micro 6.1 | grub2 | 2.12-slfo.1.1_3.1 | SUSE-SU-2025:21062-1 |
| SLE Micro 5.5 | grub2 | 2.06-150500.29.59.1 | SUSE-SU-2025:4152-1 |
| SLE Micro 5.4 | grub2 | 2.06-150400.11.66.1 | SUSE-SU-2025:4224-1 |
| SLE Micro 5.3 | grub2 | 2.06-150400.11.66.1 | SUSE-SU-2025:4224-1 |
| SLE Micro 5.2 | grub2 | 2.04-150300.22.61.1 | SUSE-SU-2025:4143-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | grub2 | 2.12-67.1 | openSUSE-SU-2025:15749-1 |
| openSUSE Leap 16.0 | grub2 | 2.12-160000.3.1 | openSUSE-SU-2025:20163-1 |
| openSUSE Leap 15.6 | grub2 | 2.12-150600.8.44.2 | SUSE-SU-2025:4196-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | grub2-pc +16 | 1:2.06-61.amzn2023.0.21 | ALAS2023-2025-1342 |
| Amazon Linux 2 | grub2 +17 | 1:2.06-14.amzn2.0.7 | ALAS2-2025-3107 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | grub2 | 2.06-26 | — |
| Azure Linux 2 (CBL-Mariner) | grub2 | 2.06-16 | — |
Advisories 15
- WID-SEC-2025-2638 Grub: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 15, 2026
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- openSUSE-SU-2025:20163-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15749-1 grub2-2.12-67.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4224-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4197-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21212-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4196-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21223-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21062-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4152-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:4143-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:4305-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2025-1342 Moderate: grub2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 7, 2026
- ALAS2-2025-3107 Moderate: grub2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 5, 2026