Vulnerability · Published Feb 18, 2025 · Assigned by redhat
CVE-2024-45776Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.
Medium 6.7
In plain English
A medium-severity out-of-bounds write in grub2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | grub2-common | 1:2.12-15.el10_0.alma.1 | ALSA-2025:16154 |
| AlmaLinux:9 | grub2-common | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-efi-aa64 | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-efi-aa64-cdboot | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:10 | grub2-efi-aa64-modules | 1:2.12-15.el10_0.alma.1 | ALSA-2025:16154 |
| AlmaLinux:9 | grub2-efi-aa64-modules | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-efi-x64 | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-efi-x64-cdboot | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:10 | grub2-efi-x64-modules | 1:2.12-15.el10_0.alma.1 | ALSA-2025:16154 |
| AlmaLinux:9 | grub2-efi-x64-modules | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-pc | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:10 | grub2-pc-modules | 1:2.12-15.el10_0.alma.1 | ALSA-2025:16154 |
| AlmaLinux:9 | grub2-pc-modules | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-ppc64le | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:10 | grub2-ppc64le-modules | 1:2.12-15.el10_0.alma.1 | ALSA-2025:16154 |
| AlmaLinux:9 | grub2-ppc64le-modules | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-tools | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-tools-efi | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-tools-extra | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| AlmaLinux:9 | grub2-tools-minimal | 1:2.06-104.el9_6.alma.1 | ALSA-2025:6990 |
| Debian:12 | grub2 | 2.06-13+deb12u2 | DEBIAN-CVE-2024-45776 |
| Debian:13 | grub2 | 2.12-6 | DEBIAN-CVE-2024-45776 |
| Debian:14 | grub2 | 2.12-6 | DEBIAN-CVE-2024-45776 |
| Rocky Linux:10 | grub2 | 1:2.12-15.el10_0 | RLSA-2025:16154 |
| Rocky Linux:9 | grub2 | 1:2.06-104.el9_6 | RLSA-2025:6990 |
| Ubuntu:22.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:24.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:25.10 | grub2-signed | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:26.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:26.10 | grub2-signed | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:22.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:24.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:25.10 | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:26.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45776 |
| Ubuntu:26.10 | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45776 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| grub2 | 0 – through 2.12 | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- RHSA-2025:16154 vendor-advisory, x_refsource_REDHAT
- RHSA-2025:6990 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2024-45776 vdb-entry, x_refsource_REDHAT
- RHBZ#2339182 issue-tracking, x_refsource_REDHAT