CVE-2022-2566 Heap-memory write in FFMPEG

A heap out-of-bounds memory write exists in FFMPEG since version 5.1. The size calculation in buildopengopkeypoints goes through all entries in the loop and adds sc-cttsdatai.count to sc-sampleoffsetscount. This can lead to an integer overflow resulting in a small allocation with avcalloc. An...