FFmpeg Buffer Overflow Vulnerability (CNVD-2022-70582)

FFmpeg is software developed by individual developers that performs recording, conversion, and streaming functions for multiple formats of audio and video. a buffer overflow vulnerability exists in FFmpeg, where the size calculation in build_open_gop_key_points() iterates over all entries in the loop and adds sc->ctts_data[i].count added to sc->sample_offsets_count, which could lead to an integer overflow. An attacker could exploit this vulnerability to cause a buffer overflow.