[FFmpeg-devel] [PATCH 08/12] mvdec: validate sample_rate

[Andreas Cadhalpun]

A negative sample rate doesn't make sense and triggers assertions in
av_rescale_rnd.

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---
 libavformat/mvdec.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c
index 80ef4b1..f0a29eb 100644
--- a/libavformat/mvdec.c
+++ b/libavformat/mvdec.c
@@ -317,6 +317,10 @@ static int mv_read_header(AVFormatContext *avctx)
         ast->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
         ast->nb_frames          = vst->nb_frames;
         ast->codecpar->sample_rate = avio_rb32(pb);
+        if (ast->codecpar->sample_rate <= 0) {
+            av_log(avctx, AV_LOG_ERROR, "Invalid sample rate %d\n", ast->codecpar->sample_rate);
+            return AVERROR_INVALIDDATA;
+        }
         avpriv_set_pts_info(ast, 33, 1, ast->codecpar->sample_rate);
         if (set_channels(avctx, ast, avio_rb32(pb)) < 0)
             return AVERROR_INVALIDDATA;
-- 
2.9.3