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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-21 23:02:56 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | 5251e09f2aa41c7eb7d48c5850ecc070e8c70562 (patch) | |
| tree | a6269d3c20f48999c9fd7f4087bcad1983bb80d0 | |
| parent | 096b57c93bbae7402286f00232db782d4d4e4b8d (diff) | |
| download | ffmpeg-5251e09f2aa41c7eb7d48c5850ecc070e8c70562.tar.gz | |
avcodec/adpcm: Clip predictor for APC
Fixes: signed integer overflow: -2147483648 - 13 cannot be represented in type 'int'
Fixes: 18893/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_IMA_APC_fuzzer-5630760442920960
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 9fe07908c3f67d59cf4db5668d61b34506189590)
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 df31bc1e0c..5bee48171a 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -139,8 +139,8 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx) break; case AV_CODEC_ID_ADPCM_IMA_APC: if (avctx->extradata && avctx->extradata_size >= 8) { - c->status[0].predictor = AV_RL32(avctx->extradata); - c->status[1].predictor = AV_RL32(avctx->extradata + 4); + c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata ), 18); + c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 4), 18); } break; case AV_CODEC_ID_ADPCM_IMA_WS: |