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avcodec/sonic: Check num_taps
The encoder uses max 128 taps, which is quiet a lot already
If work is done to improve sonic, it will be more radical than changing the taps
Fixes: Timeout
Fixes: 402539974/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-6122944271286272
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 fd0a792766
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -924,6 +924,9 @@ static av_cold int sonic_decode_init(AVCodecContext *avctx)
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if (get_bits1(&gb)) // XXX FIXME
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av_log(avctx, AV_LOG_INFO, "Custom quant table\n");
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if (s->num_taps > 128)
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return AVERROR_INVALIDDATA;
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s->block_align = 2048LL*s->samplerate/(44100*s->downsampling);
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s->frame_size = s->channels*s->block_align*s->downsampling;
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// avctx->frame_size = s->block_align;
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