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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-09-27 12:04:57 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | 7c985c6334255bf8994da057d3d24876fadb199c (patch) | |
| tree | 577d6345ba23785e018ee4c8d0ed88751d05343a | |
| parent | 53bf9cb31ca892a52362a335a3ae2922f7c2e885 (diff) | |
| download | ffmpeg-7c985c6334255bf8994da057d3d24876fadb199c.tar.gz | |
avcodec/adpcm: Fix left shifts in AV_CODEC_ID_ADPCM_EA
Fixes: left shift of negative value -1
Fixes: 17683/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_EA_R2_fuzzer-5111690013704192
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 8695fbec573b0d434cf2e703a0d45742a09a5d94)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/adpcm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index f3940353ea..f498eb039f 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -1287,10 +1287,10 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data, for (count2=0; count2<28; count2++) { if (count2 & 1) - next_sample = sign_extend(byte, 4) << shift; + next_sample = (unsigned)sign_extend(byte, 4) << shift; else { byte = bytestream2_get_byte(&gb); - next_sample = sign_extend(byte >> 4, 4) << shift; + next_sample = (unsigned)sign_extend(byte >> 4, 4) << shift; } next_sample += (current_sample * coeff1) + |