CVE-2025-1125
Last modified
CVE-2025-1125 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution by-passing secure boot protections.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Grub2 | <= 2.12 |
References
- https://access.redhat.com/security/cve/CVE-2025-1125Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2346138Issue Tracking, Third Party Advisory
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.htmlMailing List, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-1125?
How severe is CVE-2025-1125?
How do I fix CVE-2025-1125?
Are you affected by CVE-2025-1125?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST