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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-01 00:10:47 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-06 11:30:43 +0100 |
| commit | c9be168ac103edf9610334276a1a20c97bc5d444 (patch) | |
| tree | 5dfd0c2cc8fde606a6579b8cb2a4e64355a3e2fe | |
| parent | b30d2683c47b4fe5f6e55d01c1fa3aa10c10d194 (diff) | |
| download | ffmpeg-c9be168ac103edf9610334276a1a20c97bc5d444.tar.gz | |
avcodec/smacker: Fix integer overflows in pred[] in smka_decode_frame()
Fixes: signed integer overflow: -2147481503 + -32732 cannot be represented in type 'int'
Fixes: 17782/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SMACKAUD_fuzzer-5769672225456128
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 a76897e19ca96127e07f5acc5a773b904dcf6124)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/smacker.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c index 27da0bc97a..3e3eed9f7e 100644 --- a/libavcodec/smacker.c +++ b/libavcodec/smacker.c @@ -735,7 +735,7 @@ static int smka_decode_frame(AVCodecContext *avctx, void *data, return AVERROR_INVALIDDATA; } val |= h[3].values[res] << 8; - pred[1] += sign_extend(val, 16); + pred[1] += (unsigned)sign_extend(val, 16); *samples++ = pred[1]; } else { if(vlc[0].table) @@ -756,7 +756,7 @@ static int smka_decode_frame(AVCodecContext *avctx, void *data, return AVERROR_INVALIDDATA; } val |= h[1].values[res] << 8; - pred[0] += sign_extend(val, 16); + pred[0] += (unsigned)sign_extend(val, 16); *samples++ = pred[0]; } } |