avcodec/aacdec_fixed: Fix runtime error: signed integer overflow: -2147483648 * ...
authorMichael Niedermayer <michael@niedermayer.cc>
Thu, 25 May 2017 21:01:27 +0000 (23:01 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Thu, 25 May 2017 21:03:53 +0000 (23:03 +0200)
Fixes: 1825/clusterfuzz-testcase-minimized-6002833050566656

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

index 2754766..53a971c 100644 (file)
@@ -187,7 +187,7 @@ static void subband_scale(int *dst, int *src, int scale, int offset, int len)
         round = 1U << (s-1);
         for (i=0; i<len; i++) {
             out = (int)((int64_t)((int64_t)src[i] * c + round) >> s);
-            dst[i] = out * ssign;
+            dst[i] = out * (unsigned)ssign;
         }
     }
 }