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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-09-27 18:02:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | a2d319fe34d1ea9f1d25d56ef3357e8d7112fdb5 (patch) | |
| tree | 0073f968841be988b678a43dbc913d5d14768e01 | |
| parent | 462949e08732fc3ec8930e57bb74b2e90e9e2a14 (diff) | |
| download | ffmpeg-a2d319fe34d1ea9f1d25d56ef3357e8d7112fdb5.tar.gz | |
avcodec/adpcm: Check initial predictor for ADPCM_IMA_EA_EACS
Fixes: signed integer overflow: -2147483360 - 631 cannot be represented in type 'int'
Fixes: 17701/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_IMA_EA_EACS_fuzzer-5711517319692288
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 2f66e8436d89963362acf533a60ed4fedb42546e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/adpcm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index f498eb039f..4bc12e44d6 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -1138,8 +1138,11 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data, return AVERROR_INVALIDDATA; } } - for (i=0; i<=st; i++) + for (i=0; i<=st; i++) { c->status[i].predictor = bytestream2_get_le32u(&gb); + if (FFABS(c->status[i].predictor) > (1<<16)) + return AVERROR_INVALIDDATA; + } for (n = nb_samples >> (1 - st); n > 0; n--) { int byte = bytestream2_get_byteu(&gb); |