[FFmpeg-devel] [PATCH 3/9] genh: prevent overflow during block alignment calculation

[Andreas Cadhalpun]

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---
 libavformat/genh.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/genh.c b/libavformat/genh.c
index b683e026d1..dd4e76d3d9 100644
--- a/libavformat/genh.c
+++ b/libavformat/genh.c
@@ -20,6 +20,7 @@
  */
 
 #include "libavutil/intreadwrite.h"
+#include "libavcodec/internal.h"
 #include "avformat.h"
 #include "internal.h"
 
@@ -54,7 +55,7 @@ static int genh_read_header(AVFormatContext *s)
 
     st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
     st->codecpar->channels    = avio_rl32(s->pb);
-    if (st->codecpar->channels <= 0)
+    if (st->codecpar->channels <= 0 || st->codecpar->channels > FF_SANE_NB_CHANNELS)
         return AVERROR_INVALIDDATA;
     if (st->codecpar->channels == 1)
         st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
-- 
2.11.0