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avcodec/vp3: Check for end of input in vp4_unpack_vlcs()

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Fixes: Timeout (too long -> 1sec)
Fixes: 15232/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VP3_fuzzer-5769583086010368

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-08-02 21:23:18 +02:00
parent b4bf7226af
commit 58c7f419ce
1 changed files with 2 additions and 0 deletions
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libavcodec/vp3.c
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@ -1403,6 +1403,8 @@ static int vp4_unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
int eob_run;
while (!eob_tracker[coeff_i]) {
if (get_bits_left(gb) < 1)
return AVERROR_INVALIDDATA;
token = get_vlc2(gb, vlc_tables[coeff_i]->table, 11, 3);