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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-06 15:17:29 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-23 13:15:17 +0200 |
| commit | b7a69943e8e64cd69bd118b2bda8c16d32d97122 (patch) | |
| tree | 4ce00dbc256c30efe8796c17d550aadbb57471d1 | |
| parent | 7a37ef34fb07c91525ab783533a62efe036d4d7f (diff) | |
| download | ffmpeg-b7a69943e8e64cd69bd118b2bda8c16d32d97122.tar.gz | |
avcodec/mimic: Fix runtime error: left shift of negative value -1
Fixes: 1365/clusterfuzz-testcase-minimized-5624158450876416
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fc2c420b82939a8f30838a6aa08bfd936099d3ce)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mimic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mimic.c b/libavcodec/mimic.c index 24724fa75d..cad2245663 100644 --- a/libavcodec/mimic.c +++ b/libavcodec/mimic.c @@ -263,7 +263,7 @@ static int vlc_decode_block(MimicContext *ctx, int num_coeffs, int qscale) coeff = vlcdec_lookup[num_bits][value]; if (pos < 3) - coeff <<= 4; + coeff *= 16; else /* TODO Use >> 10 instead of / 1001 */ coeff = (coeff * qscale) / 1001; |