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fix possible out of bound in text_to_netaddr

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diff from Renaud Allard (renaud at allard.it), thanks!
ok deraadt
This commit is contained in:
op
2026-04-01 11:20:58 +00:00
parent 76af690f2b
commit 9532dfe990
1 changed files with 2 additions and 2 deletions
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4
usr.sbin/smtpd/to.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: to.c,v 1.50 2023/05/31 16:51:46 op Exp $ */
/* $OpenBSD: to.c,v 1.51 2026/04/01 11:20:58 op Exp $ */
/*
* Copyright (c) 2009 Jacek Masiulaniec <jacekm@dobremiasto.net>
@@ -248,7 +248,7 @@ text_to_netaddr(struct netaddr *netaddr, const char *s)
s += 5;
if ((len = strlcpy(buf, s, sizeof buf)) >= sizeof buf)
return 0;
if (buf[len-1] != ']')
if (len == 0 || buf[len-1] != ']')
return 0;
buf[len-1] = 0;
}