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lavfi/drawutils: ensure we can't overflow a component

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rcombs 2021-12-23 19:48:24 -06:00
parent f00079b25c
commit f320722eb5
1 changed files with 2 additions and 0 deletions
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2
libavfilter/drawutils.c
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@ -112,6 +112,8 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
if (depthb && (depthb != db))
return AVERROR(ENOSYS);
depthb = db;
if (db * (c->offset + 1) > 16)
return AVERROR(ENOSYS);
/* strange interleaving */
if (pixelstep[c->plane] != 0 &&
pixelstep[c->plane] != c->step)