CVE-2025-0690 | BDVDB-2026-267281 Detail

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.

Impact#

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Exploit#

History#

1. Version 12025-02-24Record published in the CVE List.
2. Version 22026-11-05Most recent update recorded in the CVE List.