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PMKSA: Set cur_pmksa pointer during initial association

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cur_pmksa was left to NULL during the initial association. This can
result in unexpected behavior, e.g., in expiring PMKSA cache entries
since the current entry is not locked in that case. Fix this by updated
cur_pmksa when adding the initial PMKSA entry during msg 1/4 processing.

Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
This commit is contained in:
Jouni Malinen 2012-08-10 18:05:03 +03:00
parent 0e502f97c5
commit a7f10d65f4
1 changed files with 9 additions and 3 deletions
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12
src/rsn_supp/wpa.c
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@ -190,14 +190,17 @@ static int wpa_supplicant_get_pmk(struct wpa_sm *sm,
#endif /* CONFIG_IEEE80211R */
}
if (res == 0) {
struct rsn_pmksa_cache_entry *sa = NULL;
wpa_hexdump_key(MSG_DEBUG, "WPA: PMK from EAPOL state "
"machines", sm->pmk, pmk_len);
sm->pmk_len = pmk_len;
if (sm->proto == WPA_PROTO_RSN &&
!wpa_key_mgmt_ft(sm->key_mgmt)) {
pmksa_cache_add(sm->pmksa, sm->pmk, pmk_len,
src_addr, sm->own_addr,
sm->network_ctx, sm->key_mgmt);
sa = pmksa_cache_add(sm->pmksa,
sm->pmk, pmk_len,
src_addr, sm->own_addr,
sm->network_ctx,
sm->key_mgmt);
}
if (!sm->cur_pmksa && pmkid &&
pmksa_cache_get(sm->pmksa, src_addr, pmkid, NULL))
@ -207,6 +210,9 @@ static int wpa_supplicant_get_pmk(struct wpa_sm *sm,
"PMKID");
abort_cached = 0;
}
if (!sm->cur_pmksa)
sm->cur_pmksa = sa;
} else {
wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
"WPA: Failed to get master session key from "