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avformat/usmdec: do not return 0 when no packet was produced 

Fixes: Assertion pkt->stream_index < (unsigned)s->nb_streams && "Invalid stream index.\n" failed at libavformat/demux.c:617
Fixes: 62498/clusterfuzz-testcase-minimized-ffmpeg_dem_USM_fuzzer-4734740995112960

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2023-10-05 14:38:08 +02:00
parent cd66606a8f
commit fff875a7f4
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1 changed files with 1 additions and 1 deletions
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libavformat/usmdec.c
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@ -361,7 +361,7 @@ static int64_t parse_chunk(AVFormatContext *s, AVIOContext *pb,
ret = avio_skip(pb, FFMAX(0, chunk_size - (ret - chunk_start)));
if (ret < 0)
return ret;
return 0;
return FFERROR_REDO;
}
static int usm_read_packet(AVFormatContext *s, AVPacket *pkt)