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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-02-01 19:04:37 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-03-21 04:23:59 +0100 |
| commit | 605c3f051540970c313a65f5a5345f6ba148a75b (patch) | |
| tree | b40fecc5a1df476a9406b3f7dc28f2cde2097d75 | |
| parent | e0f351a97955c06772dd3969f25ed1c8999eed35 (diff) | |
| download | ffmpeg-605c3f051540970c313a65f5a5345f6ba148a75b.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 775caa69f8..284cbead96 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -578,6 +578,8 @@ int 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 |