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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-15 03:32:44 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-17 00:23:01 +0200 |
| commit | 92da23093c784b1d9f0db4db51d28ea80a59e759 (patch) | |
| tree | df31f507349ad40b067d4ff5a75ca5f1eb13c322 /libavcodec/diracdec.c | |
| parent | 1e6cab874512070b36267a5a53fd053f90072fa2 (diff) | |
| download | ffmpeg-92da23093c784b1d9f0db4db51d28ea80a59e759.tar.gz | |
avcodec/diracdec: Fixes integer overflow
Fixes: runtime error: signed integer overflow: 340018243 * 27 cannot be represented in type 'int'
Fixes: 2861/clusterfuzz-testcase-minimized-5361070510178304
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/diracdec.c')
| -rw-r--r-- | libavcodec/diracdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 29042bd86b..0aee08f9e1 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -442,7 +442,7 @@ static av_cold int dirac_decode_end(AVCodecContext *avctx) static inline int coeff_unpack_golomb(GetBitContext *gb, int qfactor, int qoffset) { int coeff = dirac_get_se_golomb(gb); - const int sign = FFSIGN(coeff); + const unsigned sign = FFSIGN(coeff); if (coeff) coeff = sign*((sign * coeff * qfactor + qoffset) >> 2); return coeff; |