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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 16:25:20 +0100 |
| commit | 5b38967745e9abfaf8cdfb356a1040f6ec214f77 (patch) | |
| tree | 48f355fa1c6e84fbe687c16719bea7665fc293d1 | |
| parent | 87c203ba2684947d92f6bcef4acbfe53d9632299 (diff) | |
| download | ffmpeg-5b38967745e9abfaf8cdfb356a1040f6ec214f77.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 d7352d3671..deb4efe8ad 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -583,6 +583,8 @@ 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); if (!v->s.avctx->codec) |