FFmpeg vc1_put_blocks_clamped function out-of-bounds access vulnerability

FFmpeg is a set of open source computer programs that can be used to record, convert digital audio and video to streams under the LGPL or GPL license. An array out-of-bounds access vulnerability exists in the vc1putblocksclamped function in libavcodec/vc1block.c in FFmpeg 4.0.1 when converting a...