Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Grub2 | <= 2.12 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2025-1125Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2346138Issue TrackingThird Party Advisory
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.htmlMailing ListVendor Advisory
FAQ
What is CVE-2025-1125?
CVE-2025-1125 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2025-1125?
CVE-2025-1125 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-1125?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Grub2.