[FFmpeg-cvslog] avcodec/dds: Fix runtime error: left shift of 210 by 24 places cannot be represented in type 'int'

[Michael Niedermayer]

ffmpeg | branch: release/3.3 | Michael Niedermayer <michael at niedermayer.cc> | Sat May 13 01:35:56 2017 +0200| [0f928e5918abeaeac62bcf20bacaf59037b963e5] | committer: Michael Niedermayer

avcodec/dds: Fix runtime error: left shift of 210 by 24 places cannot be represented in type 'int'

Fixes: 1510/clusterfuzz-testcase-minimized-5826231746428928

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit afb4632cc30e83287338690c785ebac180436a59)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0f928e5918abeaeac62bcf20bacaf59037b963e5
---

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

diff --git a/libavcodec/dds.c b/libavcodec/dds.c
index 468763e6bf..bc11bdb0fa 100644
--- a/libavcodec/dds.c
+++ b/libavcodec/dds.c
@@ -718,7 +718,7 @@ static int dds_decode(AVCodecContext *avctx, void *data,
                         (frame->data[1][2+i*4]<<0)+
                         (frame->data[1][1+i*4]<<8)+
                         (frame->data[1][0+i*4]<<16)+
-                        (frame->data[1][3+i*4]<<24)
+                        ((unsigned)frame->data[1][3+i*4]<<24)
                 );
 
             frame->palette_has_changed = 1;