CVE-2024-45777 Grub2: grub-core/gettext: integer overflow leads to heap oob write.
Medium 6.7
Published
Updated
Check this codebase for CVE-2024-45777 and fix it if it is affected.
What it is: CVE-2024-45777 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 19 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-45777 in the wild and no public exploit code.
Affected product: Redhat Enterprise Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2024-45777/ (Markdown: https://insights.sbomify.com/CVE-2024-45777/index.md)
An integer overflow in GRUB2 allows attackers to overwrite heap data and bypass Secure Boot protections via malicious language files.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-45777?
CVE-2024-45777 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 19 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.
Weakness: CWE-787
Which versions are affected by CVE-2024-45777?
It affects 3 products.
Linux distribution packages (39)
grub2-common AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-efi-aa64 AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-efi-aa64-cdboot AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-efi-aa64-modules AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-efi-x64 AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-efi-x64-cdboot AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-efi-x64-modules AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-pc AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-pc-modules AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-ppc64le AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-ppc64le-modules AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-tools AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-tools-efi AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-tools-extra AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2-tools-minimal AlmaLinux:9 | All versions | 1:2.06-114.el9_7.alma.1 |
grub2 Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-common Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-debugsource Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-efi-aa64 Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-efi-aa64-cdboot Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-efi-aa64-modules Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-efi-x64 Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-efi-x64-cdboot Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-efi-x64-modules Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-emu-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-pc Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-pc-modules Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-ppc64le Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-ppc64le-modules Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-efi Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-efi-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-extra Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-extra-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-minimal Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2-tools-minimal-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 1:2.06-114.el9_7 |
grub2 Rocky Linux:9 | All versions | 1:2.06-114.el9_7.0.1 |
Products include Gnu Grub2, Redhat Enterprise Linux, Redhat Openshift.
How do I fix CVE-2024-45777?
Apply the vendor's patch.
Is CVE-2024-45777 being exploited?
There is no known exploitation of CVE-2024-45777 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2024-56737 Memory corruption in GRUB2
- CVE-2022-28733 Integer underflow in grub_net_recv_ip4_packets
- CVE-2022-28734 Out-of-bounds write when handling split HTTP headers
- CVE-2025-61662 Grub2: missing unregister call for gettext command may lead to use-after-free
- CVE-2024-45782 Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)
Sources
Also known as ALSA-2025:20532, AZL-56901, AZL-56992, BELL-CVE-2024-45777, DEBIAN-CVE-2024-45777, GHSA-5hp2-x786-x3fq and 3 more.