Description
An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | grub | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
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 | 2.12~rc1-11 | — |
| Debian 13 | grub2 | 2.12~rc1-11 | — |
| Debian 12 | grub2 | 2.06-13+deb12u1 | DSA-5519-1 |
| Debian 11 | grub2 | 2.06-3~deb11u6 | DSA-5519-1 |
| Debian 10 | grub2 | 2.06-3~deb10u4 | DLA-3605-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | grub2-signed | 1.197 | — |
| Ubuntu 24.04 LTS | grub2-unsigned | 2.12~rc1-10ubuntu4 | — |
| Ubuntu 22.04 LTS | grub2-signed | 1.187.6 | USN-6410-1 |
| Ubuntu 22.04 LTS | grub2-unsigned | 2.06-2ubuntu14.4 | USN-6410-1 |
| Ubuntu 20.04 LTS | grub2-signed | 1.187.6~20.04.1 | USN-6410-1 |
| Ubuntu 20.04 LTS | grub2-unsigned | 2.06-2ubuntu14.4 | — |
| Ubuntu 18.04 LTS | grub2-signed +1 | No fix yet | — |
| Ubuntu 16.04 LTS | grub2-signed +1 | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | grub2-signed | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | grub2 +15 | 1:2.06-77.el9 | RHSA-2024:2456 |
| RHEL 8 | grub2 +18 | 1:2.02-156.el8 | RHSA-2024:3184 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | grub2-pc +14 | 1:2.06-77.el9.alma.1 | ALSA-2024:2456 |
| AlmaLinux 8 | grub2-pc +17 | 1:2.02-156.el8.alma.1 | ALSA-2024:3184 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | grub2 | 1:2.02-156.el8.rocky.0.1 | RLSA-2024:3184 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | grub2 | 2.06-150500.29.8.1 | SUSE-SU-2023:4141-1 |
| SLES 15 SP4 | grub2 | 2.06-150400.11.38.1 | SUSE-SU-2023:4140-1 |
| SLES 15 SP3 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SLES 12 SP5 | grub2 | 2.02-169.1 | SUSE-SU-2023:4085-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SLES for SAP 12 SP5 | grub2 | 2.02-169.1 | SUSE-SU-2023:4085-1 |
| SLE Micro 5.5 | grub2 | 2.06-150500.29.8.1 | SUSE-SU-2023:4141-1 |
| SLE Micro 5.4 | grub2 | 2.06-150400.11.38.1 | SUSE-SU-2023:4140-1 |
| SLE Micro 5.3 | grub2 | 2.06-150400.11.38.1 | SUSE-SU-2023:4140-1 |
| SLE Micro 5.2 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SLE Micro 5.1 | grub2 | 2.04-150300.3.11.1 | SUSE-SU-2025:01961-1 |
| SLE HPC 15 SP3 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SUSE Manager Server 4.2 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SUSE Manager Proxy Module 4.3 | grub2 | 2.06-150400.11.38.1 | SUSE-SU-2023:4140-1 |
| SUSE Manager Proxy Module 4.2 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SUSE Manager Proxy 4.2 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
| SUSE Enterprise Storage 7.1 | grub2 | 2.04-150300.22.43.1 | SUSE-SU-2023:4130-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | grub2 | 2.12~rc1-5.1 | openSUSE-SU-2024:13328-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | grub2-pc +16 | 1:2.06-61.amzn2023.0.8 | ALAS2023-2023-409 |
| Amazon Linux 2 | grub2 +17 | 1:2.06-14.amzn2.0.2 | ALAS2-2023-2292 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | grub2 | 2.06-18 | — |
| Azure Linux 2 (CBL-Mariner) | grub2 | 2.06-13 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | grub2-pc +12 | 1:2.06-77.0.1.el9 | ELSA-2024-2456 |
| Oracle Linux 8 | grub2-pc +15 | 1:2.02-156.0.1.el8 | ELSA-2024-3184 |
Advisories 22
- ALSA-2024:2456 Moderate: grub2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3184 Moderate: grub2 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:3184 Red Hat Security Advisory: grub2 security update Red Hat Security Advisories (RHSA) · Jul 21, 2026
- RHSA-2024:2456 Red Hat Security Advisory: grub2 security update Red Hat Security Advisories (RHSA) · Jul 21, 2026
- USN-6410-1 grub2-signed, grub2-unsigned vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- SUSE-SU-2025:01961-1 Security update for grub2 SUSE / openSUSE Security Updates · Mar 23, 2026
- DSA-5519-1 grub2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3605-1 grub2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:3184 Moderate: grub2 security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:4085-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4141-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4140-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13328-1 grub2-2.12~rc1-5.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4130-1 Security update for grub2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0225 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2025
- WID-SEC-2023-2552 Grub2: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Jun 16, 2025
- WID-SEC-2024-1905 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 3, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- ELSA-2024-3184 Moderate: grub2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2024
- ELSA-2024-2456 Moderate: grub2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 3, 2024
- ALAS2023-2023-409 Important: grub2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 3, 2023
- ALAS2-2023-2292 Important: grub2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 19, 2023
References
- RHSA-2024:2456 vendor-advisory
- RHSA-2024:3184 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-4692 vdb-entry
- RHBZ#2236613 issue-tracking
- https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/
- https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
- https://seclists.org/oss-sec/2023/q4/37