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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-15 03:32:44 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-17 12:21:32 +0200 |
| commit | 5bc3b18e3d98059ffd6ec0844b1aeca1f7f41360 (patch) | |
| tree | 5060f33cb428ff0d8e8092121ac0578f37dfad28 | |
| parent | 952393b69e666c53361fde252bc0b3f2dbabead3 (diff) | |
| download | ffmpeg-5bc3b18e3d98059ffd6ec0844b1aeca1f7f41360.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>
(cherry picked from commit 92da23093c784b1d9f0db4db51d28ea80a59e759)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -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 6be3cae8d0..e147f10564 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -436,7 +436,7 @@ 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; |