Vulnerability · Published Mar 3, 2025 · Assigned by redhat
CVE-2024-45780Grub2: fs/tar: integer overflow causes heap oob write
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 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | grub2 | 2.06-13+deb12u2 | DEBIAN-CVE-2024-45780 |
| Debian:13 | grub2 | 2.12-6 | DEBIAN-CVE-2024-45780 |
| Debian:14 | grub2 | 2.12-6 | DEBIAN-CVE-2024-45780 |
| Ubuntu:22.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:24.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:25.10 | grub2-signed | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:26.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:26.10 | grub2-signed | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:22.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:24.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:25.10 | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:26.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45780 |
| Ubuntu:26.10 | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45780 |
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 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | 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
- https://access.redhat.com/security/cve/CVE-2024-45780 vdb-entry, x_refsource_REDHAT
- RHBZ#2345856 issue-tracking, x_refsource_REDHAT
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html