Re: [FFmpeg-devel] [PATCH 6/7] avcodec/rv60dec: inter also fails with qp >= 32

[Michael Niedermayer <michael@niedermayer.cc>]

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On Fri, May 09, 2025 at 07:07:51PM +1000, Peter Ross wrote:
> On Thu, May 08, 2025 at 11:57:37PM +0200, Michael Niedermayer wrote:
> > Fixes: out of array read in decode_cu_16x16()
> > Fixes: 398049430/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV60_fuzzer-5525836849807360
> > 
> > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> > ---
> >  libavcodec/rv60dec.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/libavcodec/rv60dec.c b/libavcodec/rv60dec.c
> > index 24981015a94..d704ae512c2 100644
> > --- a/libavcodec/rv60dec.c
> > +++ b/libavcodec/rv60dec.c
> > @@ -1791,7 +1791,7 @@ static int decode_cu_r(RV60Context * s, AVFrame * frame, ThreadContext * thread,
> >          ttype = cu.pu_type == PU_FULL ? TRANSFORM_8X8 : TRANSFORM_4X4;
> >  
> >      is_intra = cu.cu_type == CU_INTRA;
> > -    if (is_intra && qp >= 32)
> > +    if (qp >= 32)
> >          return AVERROR_INVALIDDATA;
> >      cu_pos = ((xpos & 63) >> 3) + ((ypos & 63) >> 3) * 8;
> 
> please apply

will apply

thx

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No great genius has ever existed without some touch of madness. -- Aristotle

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