diff options
author | 2023-03-10 18:19:55 -0800 | |
---|---|---|
committer | 2023-03-10 18:19:55 -0800 | |
commit | 27c30b9b449aaee3b85006b63e08b33016cf7333 (patch) | |
tree | b7f250bca337d17aab5ef2febad2f550bc1a0f2a /net | |
parent | MAINTAINERS: make my email address consistent (diff) | |
parent | wifi: cfg80211: fix MLO connection ownership (diff) | |
download | linux-27c30b9b449aaee3b85006b63e08b33016cf7333.tar.gz linux-27c30b9b449aaee3b85006b63e08b33016cf7333.tar.bz2 linux-27c30b9b449aaee3b85006b63e08b33016cf7333.zip |
Merge tag 'wireless-2023-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
Just a few fixes:
* MLO connection socket ownership didn't work
* basic rates validation was missing (reported by
by a private syzbot instances)
* puncturing bitmap netlink policy was completely broken
* properly check chandef for NULL channel, it can be
pointing to a chandef that's still uninitialized
* tag 'wireless-2023-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: cfg80211: fix MLO connection ownership
wifi: mac80211: check basic rates validity
wifi: nl80211: fix puncturing bitmap policy
wifi: nl80211: fix NULL-ptr deref in offchan check
====================
Link: https://lore.kernel.org/r/20230310114647.35422-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
-rw-r--r-- | net/mac80211/cfg.c | 21 | ||||
-rw-r--r-- | net/wireless/nl80211.c | 26 |
2 files changed, 26 insertions, 21 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 8eb342300868..d3d861911ed6 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2611,6 +2611,17 @@ static int ieee80211_change_bss(struct wiphy *wiphy, if (!sband) return -EINVAL; + if (params->basic_rates) { + if (!ieee80211_parse_bitrates(link->conf->chandef.width, + wiphy->bands[sband->band], + params->basic_rates, + params->basic_rates_len, + &link->conf->basic_rates)) + return -EINVAL; + changed |= BSS_CHANGED_BASIC_RATES; + ieee80211_check_rate_mask(link); + } + if (params->use_cts_prot >= 0) { link->conf->use_cts_prot = params->use_cts_prot; changed |= BSS_CHANGED_ERP_CTS_PROT; @@ -2632,16 +2643,6 @@ static int ieee80211_change_bss(struct wiphy *wiphy, changed |= BSS_CHANGED_ERP_SLOT; } - if (params->basic_rates) { - ieee80211_parse_bitrates(link->conf->chandef.width, - wiphy->bands[sband->band], - params->basic_rates, - params->basic_rates_len, - &link->conf->basic_rates); - changed |= BSS_CHANGED_BASIC_RATES; - ieee80211_check_rate_mask(link); - } - if (params->ap_isolate >= 0) { if (params->ap_isolate) sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 112b4bb009c8..4f63059efd81 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -462,6 +462,11 @@ nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, }; +static struct netlink_range_validation nl80211_punct_bitmap_range = { + .min = 0, + .max = 0xffff, +}; + static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD }, [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, @@ -805,7 +810,8 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN), [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG }, [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT }, - [NL80211_ATTR_PUNCT_BITMAP] = NLA_POLICY_RANGE(NLA_U8, 0, 0xffff), + [NL80211_ATTR_PUNCT_BITMAP] = + NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range), }; /* policy for the key attributes */ @@ -8901,7 +8907,7 @@ static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev, struct cfg80211_chan_def *chandef; chandef = wdev_chandef(wdev, link_id); - if (!chandef) + if (!chandef || !chandef->chan) continue; /* @@ -10793,8 +10799,7 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev, const u8 *ssid, int ssid_len, - struct nlattr **attrs, - const u8 **bssid_out) + struct nlattr **attrs) { struct ieee80211_channel *chan; struct cfg80211_bss *bss; @@ -10821,7 +10826,6 @@ static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device if (!bss) return ERR_PTR(-ENOENT); - *bssid_out = bssid; return bss; } @@ -10831,7 +10835,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) struct net_device *dev = info->user_ptr[1]; struct cfg80211_assoc_request req = {}; struct nlattr **attrs = NULL; - const u8 *bssid, *ssid; + const u8 *ap_addr, *ssid; unsigned int link_id; int err, ssid_len; @@ -10968,6 +10972,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) return -EINVAL; req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]); + ap_addr = req.ap_mld_addr; attrs = kzalloc(attrsize, GFP_KERNEL); if (!attrs) @@ -10993,8 +10998,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) goto free; } req.links[link_id].bss = - nl80211_assoc_bss(rdev, ssid, ssid_len, attrs, - &bssid); + nl80211_assoc_bss(rdev, ssid, ssid_len, attrs); if (IS_ERR(req.links[link_id].bss)) { err = PTR_ERR(req.links[link_id].bss); req.links[link_id].bss = NULL; @@ -11045,10 +11049,10 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) if (req.link_id >= 0) return -EINVAL; - req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs, - &bssid); + req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs); if (IS_ERR(req.bss)) return PTR_ERR(req.bss); + ap_addr = req.bss->bssid; } err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); @@ -11061,7 +11065,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; memcpy(dev->ieee80211_ptr->disconnect_bssid, - bssid, ETH_ALEN); + ap_addr, ETH_ALEN); } wdev_unlock(dev->ieee80211_ptr); |