On Fri, Jul 27, 2012 at 09:10:51PM +0600, Mashiat Sarker Shakkhar wrote: > Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind > Signed-off-by: Michael Niedermayer <[email protected]> > --- > libavcodec/vc1dec.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c > index 2ff1315..5b0fe46 100644 > --- a/libavcodec/vc1dec.c > +++ b/libavcodec/vc1dec.c > @@ -1048,6 +1048,10 @@ static void vc1_mc_4mv_chroma4(VC1Context *v) > mquant = v->altpq; \ > if ((edges&8) && s->mb_y == (s->mb_height - 1)) \ > mquant = v->altpq; \ > + if (!mquant || mquant > 31) { \ > + av_log(v->s.avctx, AV_LOG_ERROR, "invalid mquant %d\n", mquant); > \ > + mquant = 1; \ > + } \ > } > > /** > --
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