An issue was discovered in faad2 before 2.10.0. A heap-buffer-overflow exists in the function stszin located in mp4read.c. It allows an attacker to cause Code Execution.
https://www.debian.org/security/2022/dsa-5109
https://github.com/knik0/faad2/issues/57
https://github.com/knik0/faad2/commit/1b71a6ba963d131375f5e489b3b25e36f19f3f24