29 lines
1.0 KiB
Diff
29 lines
1.0 KiB
Diff
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From 920cd815bafea084f68cc4309399aea77bd7f66b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
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Date: Fri, 3 Sep 2021 14:11:42 +0200
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Subject: [PATCH 03/15] Small safeguard to unexpected data
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Make sure negative index is not used for comparison. It seems code in
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option parsing does not allow it to be empty, but insist on it also in
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this place.
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---
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src/dhcp-common.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/dhcp-common.c b/src/dhcp-common.c
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index 73568a9..85b269a 100644
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--- a/src/dhcp-common.c
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+++ b/src/dhcp-common.c
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@@ -88,7 +88,7 @@ int match_netid_wild(struct dhcp_netid *check, struct dhcp_netid *pool)
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for (; check; check = check->next)
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{
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const int check_len = strlen(check->net);
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- const int is_wc = (check->net[check_len - 1] == '*');
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+ const int is_wc = (check_len > 0 && check->net[check_len - 1] == '*');
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/* '#' for not is for backwards compat. */
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if (check->net[0] != '!' && check->net[0] != '#')
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--
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2.31.1
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