diff options
Diffstat (limited to 'repo/dnsmasq/0003-Small-safeguard-to-unexpected-data.patch')
| -rw-r--r-- | repo/dnsmasq/0003-Small-safeguard-to-unexpected-data.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/repo/dnsmasq/0003-Small-safeguard-to-unexpected-data.patch b/repo/dnsmasq/0003-Small-safeguard-to-unexpected-data.patch new file mode 100644 index 0000000..8d90e96 --- /dev/null +++ b/repo/dnsmasq/0003-Small-safeguard-to-unexpected-data.patch @@ -0,0 +1,30 @@ +Patch-Source: https://src.fedoraproject.org/rpms/dnsmasq/blob/f36/f/0003-Small-safeguard-to-unexpected-data.patch +-- +From 920cd815bafea084f68cc4309399aea77bd7f66b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com> +Date: Fri, 3 Sep 2021 14:11:42 +0200 +Subject: [PATCH 03/15] Small safeguard to unexpected data + +Make sure negative index is not used for comparison. It seems code in +option parsing does not allow it to be empty, but insist on it also in +this place. +--- + src/dhcp-common.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/src/dhcp-common.c b/src/dhcp-common.c +index 73568a9..85b269a 100644 +--- a/src/dhcp-common.c ++++ b/src/dhcp-common.c +@@ -88,7 +88,7 @@ int match_netid_wild(struct dhcp_netid *check, struct dhcp_netid *pool) + for (; check; check = check->next) + { + const int check_len = strlen(check->net); +- const int is_wc = (check->net[check_len - 1] == '*'); ++ const int is_wc = (check_len > 0 && check->net[check_len - 1] == '*'); + + /* '#' for not is for backwards compat. */ + if (check->net[0] != '!' && check->net[0] != '#') +-- +2.31.1 + |