CVE-2024-45779

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.

CVSS 3.1

6.0CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-25)

CWE

CWE-190

Published

2025-03-03

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• gnu:grub2

References

• https://access.redhat.com/security/cve/CVE-2024-45779
• https://bugzilla.redhat.com/show_bug.cgi?id=2345854
• https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html

Check your stackJSON