diff options
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 10 | ||||
| -rw-r--r-- | net/wireless/scan.c | 14 | ||||
| -rw-r--r-- | net/wireless/sme.c | 2 |
3 files changed, 16 insertions, 10 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index aad19348bb46..7e811a3b0987 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5,7 +5,7 @@ * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright 2015-2017 Intel Deutschland GmbH - * Copyright (C) 2018-2020 Intel Corporation + * Copyright (C) 2018-2021 Intel Corporation */ #include <linux/if.h> @@ -229,9 +229,13 @@ static int validate_beacon_head(const struct nlattr *attr, unsigned int len = nla_len(attr); const struct element *elem; const struct ieee80211_mgmt *mgmt = (void *)data; - bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control); unsigned int fixedlen, hdrlen; + bool s1g_bcn; + if (len < offsetofend(typeof(*mgmt), frame_control)) + goto err; + + s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control); if (s1g_bcn) { fixedlen = offsetof(struct ieee80211_ext, u.s1g_beacon.variable); @@ -5487,7 +5491,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP], ¶ms); if (err) - return err; + goto out; } nl80211_calculate_ap_params(¶ms); diff --git a/net/wireless/scan.c b/net/wireless/scan.c index b21058698a9f..4f06c1825029 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -2354,14 +2354,16 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy, return NULL; if (ext) { - struct ieee80211_s1g_bcn_compat_ie *compat; - u8 *ie; + const struct ieee80211_s1g_bcn_compat_ie *compat; + const struct element *elem; - ie = (void *)cfg80211_find_ie(WLAN_EID_S1G_BCN_COMPAT, - variable, ielen); - if (!ie) + elem = cfg80211_find_elem(WLAN_EID_S1G_BCN_COMPAT, + variable, ielen); + if (!elem) + return NULL; + if (elem->datalen < sizeof(*compat)) return NULL; - compat = (void *)(ie + 2); + compat = (void *)elem->data; bssid = ext->u.s1g_beacon.sa; capability = le16_to_cpu(compat->compat_info); beacon_int = le16_to_cpu(compat->beacon_int); diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 07756ca5e3b5..08a70b4f090c 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -529,7 +529,7 @@ static int cfg80211_sme_connect(struct wireless_dev *wdev, cfg80211_sme_free(wdev); } - if (WARN_ON(wdev->conn)) + if (wdev->conn) return -EINPROGRESS; wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); |