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avcodec/nellymoser: Fix multiple left shift of negative value -8591
author
Michael Niedermayer
<michael@niedermayer.cc>
Fri, 5 May 2017 17:28:56 +0000
(19:28 +0200)
committer
Michael Niedermayer
<michael@niedermayer.cc>
Fri, 5 May 2017 17:29:32 +0000
(19:29 +0200)
Fixes: 1342/clusterfuzz-testcase-minimized-
5490842129137664
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/nellymoser.c
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diff --git
a/libavcodec/nellymoser.c
b/libavcodec/nellymoser.c
index
027726e
..
5ff6583
100644
(file)
--- a/
libavcodec/nellymoser.c
+++ b/
libavcodec/nellymoser.c
@@
-84,7
+84,7
@@
const int16_t ff_nelly_delta_table[32] = {
static inline int signed_shift(int i, int shift) {
if (shift > 0)
- return i << shift;
+ return
(unsigned)
i << shift;
return i >> -shift;
}
@@
-108,7
+108,7
@@
static int headroom(int *la)
return 31;
}
l = 30 - av_log2(FFABS(*la));
- *la
<<=
l;
+ *la
*= 1<<
l;
return l;
}