On Thu, Dec 08, 2022 at 06:32:40PM +1100, Peter Ross wrote: > On Sun, Nov 27, 2022 at 11:34:34PM +0100, Michael Niedermayer wrote: > > Various parts of the code assume that width can be divided by various > > powers of 2 > > without rounding > > > > Fixes: out of array access > > Fixes: > > 53623/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VQC_fuzzer-6209269924233216 > > > > Found-by: continuous fuzzing process > > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavcodec/vqcdec.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/libavcodec/vqcdec.c b/libavcodec/vqcdec.c > > index 18cd99462e..c3bce87974 100644 > > --- a/libavcodec/vqcdec.c > > +++ b/libavcodec/vqcdec.c > > @@ -71,6 +71,9 @@ static av_cold int vqc_decode_init(AVCodecContext * avctx) > > static AVOnce init_static_once = AV_ONCE_INIT; > > VqcContext *s = avctx->priv_data; > > > > + if (avctx->width & 15) > > + return AVERROR_PATCHWELCOME; > > + > > s->vectors = av_malloc((avctx->width * avctx->height * 3) / 2); > > if (!s->vectors) > > return AVERROR(ENOMEM); > > -- > > 2.17.1 > > ok. please apply.
will apply thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Complexity theory is the science of finding the exact solution to an approximation. Benchmarking OTOH is finding an approximation of the exact
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