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avcodec/exr: fix invalid shift in unpack_14()

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Fixes: 6154/clusterfuzz-testcase-minimized-5762231061970944
Fixes: runtime error: shift exponent 63 is too large for 32-bit type 'int'

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 49062a9017)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-02-21 04:29:44 +01:00
parent 5909508e8d
commit 4d45d5b606
1 changed files with 1 additions and 1 deletions
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libavcodec/exr.c
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@ -910,7 +910,7 @@ static int pxr24_uncompress(EXRContext *s, const uint8_t *src,
static void unpack_14(const uint8_t b[14], uint16_t s[16])
{
unsigned short shift = (b[ 2] >> 2);
unsigned short shift = (b[ 2] >> 2) & 15;
unsigned short bias = (0x20 << shift);
int i;