From 58c7f419ce757c3c741d6071e0dafcba7d875567 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 2 Aug 2019 21:23:18 +0200 Subject: [PATCH] avcodec/vp3: Check for end of input in vp4_unpack_vlcs() 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 Signed-off-by: Michael Niedermayer --- libavcodec/vp3.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 6ce901eda9..28ed0461c7 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -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);