| ID |
CVE-2025-0685
|
| Sažetak |
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. |
| Reference |
|
| CVSS |
| Base: | 6.4 |
| Impact: | 5.9 |
| Exploitability: | 0.5 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| LOCAL |
HIGH |
HIGH |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| HIGH |
HIGH |
HIGH |
|
| CVSS vektor |
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| Zadnje važnije ažuriranje |
30-06-2026 - 00:16 |
| Objavljeno |
03-03-2025 - 18:15 |
