Midi

Heap Buffer Overflow in MIDI File Parsing: How a Crafted File Can Corrupt Memory

A critical heap buffer overflow vulnerability was discovered and patched in the midifile C library, where sysex and meta event data lengths read directly from MIDI files were used in memcpy calls without bounds checking. An attacker could craft a malicious MIDI file to corrupt heap memory, potentially leading to arbitrary code execution or application crashes. The fix introduces proper validation of data_length values before any memory copy operations are performed.