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avfilter/vf_deblock: fix posible overreads

This commit is contained in:
Paul B Mahol 2022-04-13 10:20:59 +02:00
parent b74f212b7a
commit 9a22c6508a
1 changed files with 7 additions and 1 deletions
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8
libavfilter/vf_deblock.c
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@ -337,7 +337,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
s->deblockv(dst + x * s->bpc, out->linesize[plane],
FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max);
for (y = block; y < height; y += block) {
for (y = block; y < height - block; y += block) {
dst += out->linesize[plane] * block;
s->deblockh(dst, out->linesize[plane],
@ -353,6 +353,12 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
s->ath, s->bth, s->gth, s->dth, s->max);
}
}
dst += out->linesize[plane] * block;
for (x = block; x < width; x += block)
s->deblockv(dst + x * s->bpc, out->linesize[plane],
FFMIN(block, height - y), s->ath, s->bth, s->gth, s->dth, s->max);
}
if (in != out)