[FFmpeg-cvslog] avcodec/eamad: Fix runtime error: signed integer overflow: 49674 * 49858 cannot be represented in type 'int'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun May  7 15:42:17 2017 +0200| [0ac1c87194a67e6104a3d241a4dd1ca0808784bd] | committer: Michael Niedermayer

avcodec/eamad: Fix runtime error: signed integer overflow: 49674 * 49858 cannot be represented in type 'int'

Fixes: 1394/clusterfuzz-testcase-minimized-6493376885030912

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0ac1c87194a67e6104a3d241a4dd1ca0808784bd
---

 libavcodec/eamad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/eamad.c b/libavcodec/eamad.c
index 23b1a3c944..753dee06c3 100644
--- a/libavcodec/eamad.c
+++ b/libavcodec/eamad.c
@@ -284,7 +284,7 @@ static int decode_frame(AVCodecContext *avctx,
 
     if (avctx->width != width || avctx->height != height) {
         av_frame_unref(s->last_frame);
-        if((width * height)/2048*7 > bytestream2_get_bytes_left(&gb))
+        if((width * (int64_t)height)/2048*7 > bytestream2_get_bytes_left(&gb))
             return AVERROR_INVALIDDATA;
         if ((ret = ff_set_dimensions(avctx, width, height)) < 0)
             return ret;