crda: Fix buffer overflow in sscanf

Fixes build with clang14

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-connectivity/crda/crda/0001-Make-alpha2-to-be-3-characters-long.patch

@@ -0,0 +1,31 @@
+From 078e962d345fd0536fe7ba797485ee1a4159c032 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 4 Feb 2022 09:18:30 -0800
+Subject: [PATCH] Make alpha2 to be 3 characters long
+
+Fixes buffer overflow
+reglib.c:969:9: error: 'sscanf' may overflow; destination buffer in argument 3 has size 2, but the corresponding specifier may require size 3 [-Werror,-Wfortify-source]
+                      alpha2,
+                      ^
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ reglib.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/reglib.c b/reglib.c
+index e00e9b8..8565a0b 100644
+--- a/reglib.c
++++ b/reglib.c
+@@ -958,7 +958,7 @@ reglib_parse_rules(FILE *fp, struct ieee80211_regdomain *trd)
+ static int reglib_parse_country_dfs(char *line, struct ieee80211_regdomain *rd)
+ {
+ 	char dfs_region_alpha[9];
+-	char alpha2[2];
++	char alpha2[3];
+ 	int hits;
+ 
+ 	memset(rd, 0, sizeof(*rd));
+-- 
+2.35.1
+

meta-networking/recipes-connectivity/crda/crda_3.18.bb

@@ -15,6 +15,7 @@ SRC_URI = "https://www.kernel.org/pub/software/network/${BPN}/${BP}.tar.xz \
            file://use-target-word-size-instead-of-host-s.patch \
            file://fix-issues-when-USE_OPENSSL-1.patch \
            file://crda-4.14-python-3.patch \
+           file://0001-Make-alpha2-to-be-3-characters-long.patch \
 "
 SRC_URI[md5sum] = "0431fef3067bf503dfb464069f06163a"
 SRC_URI[sha256sum] = "43fcb9679f8b75ed87ad10944a506292def13e4afb194afa7aa921b01e8ecdbf"