Vulnerability · Published Mar 3, 2025 · Assigned by redhat
CVE-2024-45779Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
Medium 6.0
In plain English
A medium-severity integer overflow 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
An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | grub2 | 2.06-13+deb12u2 | DEBIAN-CVE-2024-45779 |
| Debian:13 | grub2 | 2.12-6 | DEBIAN-CVE-2024-45779 |
| Debian:14 | grub2 | 2.12-6 | DEBIAN-CVE-2024-45779 |
| Ubuntu:22.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:24.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:25.10 | grub2-signed | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:26.04:LTS | grub2-signed | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:26.10 | grub2-signed | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:22.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:24.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:25.10 | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:26.04:LTS | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45779 |
| Ubuntu:26.10 | grub2-unsigned | no fix listed | UBUNTU-CVE-2024-45779 |
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-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2024-45779 vdb-entry, x_refsource_REDHAT
- RHBZ#2345854 issue-tracking, x_refsource_REDHAT
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html