[FFmpeg-devel] [PATCH] avformat/argo_brp: remove block_align check for audio

[Zane van Iperen]

> Causes a divide-by-zero in the rare case where:
> - the file has an audio stream,
> - the first audio frame isn't within the first BRP_BASF_LOOKAHEAD frames,
> - an audio frame is encountered later, and
> - its chunk header (except num_blocks) contains all zeros
>    (matching the uninitialised structure in the context)
> 
> The decoder will discard any garbage data, so the check isn't really needed.
> 
> Fixes: division by 0
> Fixes: 26667/clusterfuzz-testcase-minimized-ffmpeg_dem_ARGO_BRP_fuzzer-5645146928185344.fuzz
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Zane van Iperen <zane at zanevaniperen.com>
> ---
>  libavformat/argo_brp.c | 3 ---
>  1 file changed, 3 deletions(-)

Ping. Will apply tomorrow if no comments.