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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-10 11:03:39 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-11 00:45:09 +0200 |
| commit | 8ee264e6844518a0f1e23bd5808a60a7c54af429 (patch) | |
| tree | 548ff0e45653be64701a15b4c64539939cc14745 /libavcodec/adpcm.c | |
| parent | fc99a24782fb2b763b0ea37757561d531272195e (diff) | |
| download | ffmpeg-8ee264e6844518a0f1e23bd5808a60a7c54af429.tar.gz | |
avcodec/adpcm: Clip predictor for IMA_APM
Fixes: signed integer overflow: -2147483647 - 61436 cannot be represented in type 'int'
Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_IMA_APM_fuzzer-5092176004644864
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/adpcm.c')
| -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 c6735a49c9..846ec5ef9c 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -163,9 +163,9 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx) break; case AV_CODEC_ID_ADPCM_IMA_APM: if (avctx->extradata && avctx->extradata_size >= 16) { - c->status[0].predictor = AV_RL32(avctx->extradata + 0); + c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 0), 18); c->status[0].step_index = av_clip(AV_RL32(avctx->extradata + 4), 0, 88); - c->status[1].predictor = AV_RL32(avctx->extradata + 8); + c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 8), 18); c->status[1].step_index = av_clip(AV_RL32(avctx->extradata + 12), 0, 88); } break; |