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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-11-04 01:19:19 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-12-07 23:38:06 +0100 |
| commit | 0ee2cb866c023d72073408be0c117acf817a276a (patch) | |
| tree | 3aa99be1a89931ac4ba5c8058005b638df5baf99 | |
| parent | 78b8aeee585b40c251bcf5686dcb635378ba3a44 (diff) | |
| download | ffmpeg-0ee2cb866c023d72073408be0c117acf817a276a.tar.gz | |
avcodec/exr: fix undefined shift in pxr24_uncompress()
Fixes: runtime error: left shift of 255 by 24 places cannot be represented in type 'int'
Fixes: 3787/clusterfuzz-testcase-minimized-5728764920070144
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 66f0c958bfd5475658b432d1af4d2e174b2dfcda)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/exr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 0b755db3cb..b1ecde4ebd 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -855,7 +855,7 @@ static int pxr24_uncompress(EXRContext *s, const uint8_t *src, in = ptr[2] + td->xsize; for (j = 0; j < td->xsize; ++j) { - uint32_t diff = (*(ptr[0]++) << 24) | + uint32_t diff = ((unsigned)*(ptr[0]++) << 24) | (*(ptr[1]++) << 16) | (*(ptr[2]++) << 8); pixel += diff; |