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do boundary checks when writing cursor sprite colour registers

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This commit is contained in:
macallan 2018-01-25 14:45:58 +00:00
parent 3d7806dc20
commit 1ca1edecf6
1 changed files with 6 additions and 2 deletions
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8
sys/arch/sparc/dev/cgfourteen.c
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@ -1,4 +1,4 @@
/* $NetBSD: cgfourteen.c,v 1.84 2018/01/12 23:38:24 macallan Exp $ */
/* $NetBSD: cgfourteen.c,v 1.85 2018/01/25 14:45:58 macallan Exp $ */
/*
* Copyright (c) 1996
@ -1120,7 +1120,11 @@ cg14_do_cursor(struct cgfourteen_softc *sc, struct wsdisplay_cursor *cur)
if (cur->which & WSDISPLAY_CURSOR_DOCMAP) {
int i;
uint32_t val;
if ((cur->cmap.index > 2) || (cur->cmap.count > 3) ||
(cur->cmap.index + cur->cmap.count > 3))
return EINVAL;
for (i = 0; i < min(cur->cmap.count, 3); i++) {
val = (cur->cmap.red[i] ) |
(cur->cmap.green[i] << 8) |