MariaDB: Stack Buffer Overflow via Crafted keyseg->start/ keyseg->length in .MYI File (MariaDB MyISAM)

A stack buffer overflow vulnerability was discovered in the MyISAM storage engine of MariaDB. The vulnerability was caused by lack of validation of the "keyseg-start" and "keyseg-length" fields read from the .MYI file. This allowed an attacker to write data beyond the bounds of a fixed-size stack...