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author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-12 13:13:46 +0200 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-14 00:21:50 +0200 |
commit | 34ae6101156f66b514981b34f680e6bbfc3bde4e (patch) | |
tree | db29145d62175939212a81c3b266570a1e6b2544 | |
parent | ee92ea890388cac50db2a4334c702c2f47bdca5b (diff) | |
download | ffmpeg-34ae6101156f66b514981b34f680e6bbfc3bde4e.tar.gz |
avcodec/g723_1dec: Fix runtime error: left shift of negative value -1
Fixes: 1504/clusterfuzz-testcase-minimized-6249212138225664
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 c4c0245686bc2fcc545644101c7b328fed71f268)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r-- | libavcodec/g723_1dec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/g723_1dec.c b/libavcodec/g723_1dec.c index 6d452df189..89089f5f64 100644 --- a/libavcodec/g723_1dec.c +++ b/libavcodec/g723_1dec.c @@ -695,13 +695,13 @@ static int estimate_sid_gain(G723_1_Context *p) if (y <= 0) { t = seg * 32 + (val + 1 << seg2); t = t * t - x; - val = (seg2 - 1 << 4) + val; + val = (seg2 - 1) * 16 + val; if (t >= y) val++; } else { t = seg * 32 + (val - 1 << seg2); t = t * t - x; - val = (seg2 - 1 << 4) + val; + val = (seg2 - 1) * 16 + val; if (t >= y) val--; } |