mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/qdmc: Check input space in qdmc_get_vlc()
Fixes: Timeout (125sec -> 0.4sec) Fixes: 18059/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDMC_fuzzer-5656195825664000 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -367,6 +367,8 @@ static int qdmc_get_vlc(GetBitContext *gb, VLC *table, int flag)
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{
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{
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int v;
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int v;
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if (get_bits_left(gb) < 1)
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return AVERROR_INVALIDDATA;
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v = get_vlc2(gb, table->table, table->bits, 1);
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v = get_vlc2(gb, table->table, table->bits, 1);
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if (v < 0)
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if (v < 0)
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return AVERROR_INVALIDDATA;
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return AVERROR_INVALIDDATA;
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