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. -- Peter (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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