ffmpeg | branch: master | Michael Niedermayer <michael@niedermayer.cc> | Wed Jan 23 00:30:53 2019 +0100| [db1c4acd02af4de5dfbea6012c296470679aa7a6] | committer: Michael Niedermayer 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 <michael@niedermayer.cc>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=db1c4acd02af4de5df...

libavcodec/fic.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/fic.c b/libavcodec/fic.c index 8833536330..65d102b86b 100644 --- a/libavcodec/fic.c +++ b/libavcodec/fic.c @@ -139,6 +139,9 @@ 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)) { *is_p = 1;