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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>
This commit is contained in:
Jouni Malinen 2014-10-04 22:11:00 +03:00
parent 35a7646bb1
commit 9c829900bb
1 changed files with 1 additions and 3 deletions
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4
src/ap/pmksa_cache_auth.c
View File

@ -394,15 +394,13 @@ struct rsn_pmksa_cache_entry * pmksa_cache_get_okc(
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;
}