[FFmpeg-devel] [PATCH] avformat/movenc: Check input sample count
Michael Niedermayer
michael at niedermayer.cc
Sat Jul 7 00:09:47 EEST 2018
Fixes: division by 0
Fixes: fpe_movenc.c_199_1.wav
Fixes: fpe_movenc.c_199_2.wav
Fixes: fpe_movenc.c_199_3.wav
Fixes: fpe_movenc.c_199_4.wav
Fixes: fpe_movenc.c_199_5.wav
Fixes: fpe_movenc.c_199_6.wav
Fixes: fpe_movenc.c_199_7.wav
Found-by: #CHEN HONGXU# <HCHEN017 at e.ntu.edu.sg>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavformat/movenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index fe0a244a8f..78291a9adc 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -5269,6 +5269,11 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
else
samples_in_chunk = 1;
+ if (samples_in_chunk < 1) {
+ av_log(s, AV_LOG_ERROR, "fatal error, input packet contains no samples\n");
+ return AVERROR_PATCHWELCOME;
+ }
+
/* copy extradata if it exists */
if (trk->vos_len == 0 && par->extradata_size > 0 &&
!TAG_IS_AVCI(trk->tag) &&
--
2.18.0
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