CVE-2025-0690
MEDIUM6.1EPSS 0.01%Published: 2/24/2025Modified: 5/16/2026
Description
The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.
Affected packages (1)
- Debian/grub2from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H |