VideoLAN VLC media player 2.2.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted 3GP file, which triggers the freeing of arbitrary pointers.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.