Description
A flaw was found in grub2. When reading data from a jfs filesystem, grub's jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the grub_jfs_lookup_symlink() function will write past the internal buffer length during grub_jfs_read_file(). This issue can be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections.
INFO
Published Date :
2025-03-03T17:14:23.575Z
Last Modified :
2025-11-20T20:00:08.795Z
Source :
redhat
AFFECTED PRODUCTS
The following products are affected by CVE-2025-0685 vulnerability.
| Vendors | Products |
|---|---|
| Gnu |
|
| Redhat |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-0685.
