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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-17 19:25:01 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-06 20:30:57 +0100 |
| commit | ac0ffb67f55aa189f5cb2c22b4403ac9d3d381cd (patch) | |
| tree | a7adfee5d6aca2b03cc66cffafcad07b56922e38 /libavcodec | |
| parent | 1da3f1084eb684cef4587a1cb521ca84ca55902c (diff) | |
| download | ffmpeg-ac0ffb67f55aa189f5cb2c22b4403ac9d3d381cd.tar.gz | |
avcodec/ralf: fix undefined shift in extend_code()
Fixes: left shift of negative value -3
Fixes: 16147/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5658392722407424
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 4778407ab3b545c40def7e95a8f9dd4ae92a4e8e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/ralf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index 984a6dc799..07316541ea 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -220,7 +220,7 @@ static inline int extend_code(GetBitContext *gb, int val, int range, int bits) val -= range; } if (bits) - val = (val << bits) | get_bits(gb, bits); + val = ((unsigned)val << bits) | get_bits(gb, bits); return val; } |