[FFmpeg-cvslog] avcodec/ra144: Fix integer overflow in add_wav()

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Oct 10 04:25:50 2018 +0200| [c6282141cba20934d9801f31134872fabbd6ba3e] | committer: Michael Niedermayer

avcodec/ra144: Fix integer overflow in add_wav()

Fixes: signed integer overflow: -2144033225 + -5208934 cannot be represented in type 'int'
Fixes: 10633/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RA_144_fuzzer-5679133791617024

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c6282141cba20934d9801f31134872fabbd6ba3e
---

 libavcodec/ra144.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/ra144.c b/libavcodec/ra144.c
index 573703d70b..65a744876c 100644
--- a/libavcodec/ra144.c
+++ b/libavcodec/ra144.c
@@ -1516,7 +1516,7 @@ static void add_wav(int16_t *dest, int n, int skip_first, int *m,
 
     if (v[0]) {
         for (i=0; i < BLOCKSIZE; i++)
-            dest[i] = ((int)(s1[i]*(unsigned)v[0]) + s2[i]*v[1] + s3[i]*v[2]) >> 12;
+            dest[i] = (int)((s1[i]*(unsigned)v[0]) + s2[i]*v[1] + s3[i]*v[2]) >> 12;
     } else {
         for (i=0; i < BLOCKSIZE; i++)
             dest[i] = (             s2[i]*v[1] + s3[i]*v[2]) >> 12;