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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-02-01 19:04:37 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-03-08 15:32:44 +0100 |
| commit | b66a0dce117a89db304b82dc2498c9a70c7dcecd (patch) | |
| tree | 4ce1cba5f1f3731b8691722cbee74c1e5fe432bf | |
| parent | c598a46821f001fe73b69a59432716ad84e68cf5 (diff) | |
| download | ffmpeg-b66a0dce117a89db304b82dc2498c9a70c7dcecd.tar.gz | |
avcodec/vc1: reset fcm/field_mode in non advanced header parsing
Fixes NULL pointer dereference
Fixes: signal_sigsegv_1ab8bf4_2847_cov_4254117347_SA10091.vc1
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit b51e9354772de446e8196dabf9aad1567b22f74d)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/vc1.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c index 95ac93c7ee..0120b8e231 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -580,6 +580,8 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) { int pqindex, lowquant, status; + v->field_mode = 0; + v->fcm = 0; if (v->finterpflag) v->interpfrm = get_bits1(gb); skip_bits(gb, 2); //framecnt unused |