Description
A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs 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_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.
INFO
Published Date :
2025-03-03T17:14:07.911Z
Last Modified :
2025-11-20T20:00:05.132Z
Source :
redhat
AFFECTED PRODUCTS
The following products are affected by CVE-2025-0684 vulnerability.
| Vendors | Products |
|---|---|
| Gnu |
|
| Redhat |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-0684.
