> On Jun 28, 2022, at 4:02 AM, Marton Balint <c...@passwd.hu> wrote:
>
> In order to not generate 0 sized packets or create a huge index table
> needlessly.
>
> Fixes: Timeout
> Fixes:
> 43717/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-5206008287330304
> Fixes:
> 45738/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6142535657979904
>
> Signed-off-by: Marton Balint <c...@passwd.hu>
> ---
> libavformat/mov.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/libavformat/mov.c b/libavformat/mov.c
> index c6fbe511c0..d7ef6ba6d6 100644
> --- a/libavformat/mov.c
> +++ b/libavformat/mov.c
> @@ -5179,6 +5179,8 @@ static int mov_read_trun(MOVContext *c, AVIOContext
> *pb, MOVAtom atom)
> distance++;
> if (av_sat_add64(dts, sample_duration) != dts +
> (uint64_t)sample_duration)
> return AVERROR_INVALIDDATA;
> + if (!sample_size)
> + return AVERROR_INVALIDDATA;
> dts += sample_duration;
> offset += sample_size;
> sc->data_size += sample_size;
LGTM.
> --
> 2.35.3
>
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