On Mon, Dec 02, 2024 at 12:24:53AM +0100, Michael Niedermayer wrote: > The rv60_qp_to_idx table only supports qp up to 31 on intra > > Fixes: global-buffer-overflow > Fixes: > 377543818/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV60_fuzzer-5160167345291264 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > --- > libavcodec/rv60dec.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/libavcodec/rv60dec.c b/libavcodec/rv60dec.c > index 64fa72d8f20..449650223d8 100644 > --- a/libavcodec/rv60dec.c > +++ b/libavcodec/rv60dec.c > @@ -1779,6 +1779,8 @@ 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) > + return AVERROR_INVALIDDATA; > cu_pos = ((xpos & 63) >> 3) + ((ypos & 63) >> 3) * 8;
nice find by clusterfuzz. please apply -- Peter (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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