This fixes division by zero crashes.
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavformat/rmdec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c
index d175862..4d56529 100644
--- a/libavformat/rmdec.c
+++ b/libavformat/rmdec.c
@@ -934,6 +934,10 @@ ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb,
ast->sub_packet_cnt = 0;
rm->audio_stream_num = st->index;
+ if (st->codecpar->block_align <= 0) {
+ av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n",
st->codecpar->block_align);
+ return AVERROR_INVALIDDATA;
+ }
rm->audio_pkt_cnt = h * w / st->codecpar->block_align;
} else if ((ast->deint_id == DEINT_ID_VBRF) ||
(ast->deint_id == DEINT_ID_VBRS)) {
--
2.10.2
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
