From 54c01b6f9404d769df27ef885c21b83e0eb368ea Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 23 Jan 2019 00:30:53 +0100 Subject: [PATCH] avcodec/fic: Check that there is input left in fic_decode_block() Fixes: Timeout Fixes: 12450/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FIC_fuzzer-5661984622641152 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit db1c4acd02af4de5dfbea6012c296470679aa7a6) Signed-off-by: Michael Niedermayer --- libavcodec/fic.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/fic.c b/libavcodec/fic.c index 9437080e54..e1f4178c81 100644 --- a/libavcodec/fic.c +++ b/libavcodec/fic.c @@ -138,6 +138,9 @@ static int fic_decode_block(FICContext *ctx, GetBitContext *gb, { int i, num_coeff; + if (get_bits_left(gb) < 8) + return AVERROR_INVALIDDATA; + /* Is it a skip block? */ if (get_bits1(gb)) { /* This is a P-frame. */