hostapd: merge an upstream patch for pmksa cache

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42762 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/network/services/hostapd/patches/001-fix_pmksa_cache.patch b/package/network/services/hostapd/patches/001-fix_pmksa_cache.patch
new file mode 100644 (file)
index 0000000..76a3968
--- /dev/null
+++ b/package/network/services/hostapd/patches/001-fix_pmksa_cache.patch
@@ -0,0 +1,32 @@
+From 9c829900bb01d6fb22e78ba78195c78de39f64b9 Mon Sep 17 00:00:00 2001
+From: Jouni Malinen <j@w1.fi>
+Date: Sat, 04 Oct 2014 19:11:00 +0000
+Subject: Fix authenticator OKC fetch from PMKSA cache to avoid infinite loop
+
+If the first entry in the PMKSA cache did not match the station's MAC
+address, an infinite loop could be reached in pmksa_cache_get_okc() when
+trying to find a PMKSA cache entry for opportunistic key caching cases.
+This would only happen if OKC is enabled (okc=1 included in the
+configuration file).
+
+Signed-off-by: Jouni Malinen <j@w1.fi>
+---
+--- a/src/ap/pmksa_cache_auth.c
++++ b/src/ap/pmksa_cache_auth.c
+@@ -394,15 +394,13 @@ struct rsn_pmksa_cache_entry * pmksa_cac
+       struct rsn_pmksa_cache_entry *entry;
+       u8 new_pmkid[PMKID_LEN];
+ 
+-      entry = pmksa->pmksa;
+-      while (entry) {
++      for (entry = pmksa->pmksa; entry; entry = entry->next) {
+               if (os_memcmp(entry->spa, spa, ETH_ALEN) != 0)
+                       continue;
+               rsn_pmkid(entry->pmk, entry->pmk_len, aa, spa, new_pmkid,
+                         wpa_key_mgmt_sha256(entry->akmp));
+               if (os_memcmp(new_pmkid, pmkid, PMKID_LEN) == 0)
+                       return entry;
+-              entry = entry->next;
+       }
+       return NULL;
+ }