[FFmpeg-cvslog] avcodec/g2meet: Fix potential overflow in tile dimensions check

[Michael Niedermayer]

ffmpeg | branch: release/2.4 | Michael Niedermayer <michael at niedermayer.cc> | Fri Sep  4 12:10:02 2015 +0200| [47b6ea314df6df4021690a98616d3fa73e07d0df] | committer: Michael Niedermayer

avcodec/g2meet: Fix potential overflow in tile dimensions check

Fixes CID1322351

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 71ec8e1ed6cf4947e204e3e4b5929a44c054f5fb)

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=47b6ea314df6df4021690a98616d3fa73e07d0df
---

 libavcodec/g2meet.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/g2meet.c b/libavcodec/g2meet.c
index d0cb88c..302dc9d 100644
--- a/libavcodec/g2meet.c
+++ b/libavcodec/g2meet.c
@@ -738,7 +738,7 @@ static int g2m_decode_frame(AVCodecContext *avctx, void *data,
             c->tile_height = bytestream2_get_be32(&bc);
             if (c->tile_width <= 0 || c->tile_height <= 0 ||
                 ((c->tile_width | c->tile_height) & 0xF) ||
-                c->tile_width * 4LL * c->tile_height >= INT_MAX
+                c->tile_width * (uint64_t)c->tile_height >= INT_MAX / 4
             ) {
                 av_log(avctx, AV_LOG_ERROR,
                        "Invalid tile dimensions %dx%d\n",