[FFmpeg-devel] [PATCH 6/6] avformat/rka: Fix division by 0 for bps < 8

[Paul B Mahol]

NAK, bps < 8  is invalid

On Sun, Apr 9, 2023 at 4:27 PM Michael Niedermayer <michael at niedermayer.cc>
wrote:

> Fixes: division by zero
> Fixes:
> 57828/clusterfuzz-testcase-minimized-ffmpeg_dem_RKA_fuzzer-6571818338353152
>
> Found-by: continuous fuzzing process
> https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by
> <https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by>:
> Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavformat/rka.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavformat/rka.c b/libavformat/rka.c
> index 39e5b3bce12..c83a17c92cc 100644
> --- a/libavformat/rka.c
> +++ b/libavformat/rka.c
> @@ -100,7 +100,7 @@ static int rka_read_header(AVFormatContext *s)
>                  break;
>          }
>
> -        if ((r = av_add_index_entry(st, framepos, (i * 131072LL) /
> (channels * (bps >> 3)),
> +        if ((r = av_add_index_entry(st, framepos, (i * 131072LL*8) /
> (channels * bps),
>                                      size, 0, AVINDEX_KEYFRAME)) < 0)
>              return r;
>          framepos += size;
> --
> 2.17.1
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".
>