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linux: Add upstream patches for CVE-2022-4{1674,2719-2722} 

https://lists.ipfire.org/pipermail/development/2022-October/014562.html

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
This commit is contained in:
Peter Müller 2022-10-17 16:26:19 +00:00
parent a40977958b
commit ee2e7db90b
15 changed files with 2244 additions and 0 deletions
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5
lfs/linux
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@ -146,6 +146,11 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
# https://bugzilla.ipfire.org/show_bug.cgi?id=12889
cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/linux/devtmpfs-mount-with-noexec-and-nosuid.patch
# https://lists.ipfire.org/pipermail/development/2022-October/014562.html
for i in $$(seq 1 14); do \
cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/linux/linux-5.15-wifi-security-patches-$$i.patch || exit 1; \
done
ifeq "$(BUILD_ARCH)" "armv6l"
# Apply Arm-multiarch kernel patches.
cd $(DIR_APP) && xzcat $(DIR_DL)/arm-multi-patches-$(ARM_PATCHES).patch.xz | patch -Np1

50
src/patches/linux/linux-5.15-wifi-security-patches-1.patch Normal file
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@ -0,0 +1,50 @@
From 9a8ef2030510a9d6ce86fd535b8d10720230811f Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 28 Sep 2022 21:56:15 +0200
Subject: [PATCH] wifi: cfg80211: fix u8 overflow in
cfg80211_update_notlisted_nontrans()
commit aebe9f4639b13a1f4e9a6b42cdd2e38c617b442d upstream.
In the copy code of the elements, we do the following calculation
to reach the end of the MBSSID element:
/* copy the IEs after MBSSID */
cpy_len = mbssid[1] + 2;
This looks fine, however, cpy_len is a u8, the same as mbssid[1],
so the addition of two can overflow. In this case the subsequent
memcpy() will overflow the allocated buffer, since it copies 256
bytes too much due to the way the allocation and memcpy() sizes
are calculated.
Fix this by using size_t for the cpy_len variable.
This fixes CVE-2022-41674.
Reported-by: Soenke Huster <shuster@seemoo.tu-darmstadt.de>
Tested-by: Soenke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/wireless/scan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 1a8b76c9dd56..d9ab37a798f4 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -2238,7 +2238,7 @@ cfg80211_update_notlisted_nontrans(struct wiphy *wiphy,
size_t new_ie_len;
struct cfg80211_bss_ies *new_ies;
const struct cfg80211_bss_ies *old;
- u8 cpy_len;
+ size_t cpy_len;
lockdep_assert_held(&wiphy_to_rdev(wiphy)->bss_lock);
--
2.30.2

98
src/patches/linux/linux-5.15-wifi-security-patches-10.patch Normal file
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@ -0,0 +1,98 @@
From 21df3a583e8e03d8f74fa2eedbcd7a2b3f5cabc1 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Oct 2022 20:15:57 +0200
Subject: [PATCH] mac80211: move CRC into struct ieee802_11_elems
commit c6e37ed498f958254b5459253199e816b6bfc52f upstream.
We're currently returning this value, but to prepare for
returning the allocated structure, move it into there.
Link: https://lore.kernel.org/r/20210920154009.479b8ebf999d.If0d4ba75ee38998dc3eeae25058aa748efcb2fc9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/ieee80211_i.h | 9 +++++----
net/mac80211/mlme.c | 9 +++++----
net/mac80211/util.c | 10 +++++-----
3 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 4bd55af184b2..5ea38ae65809 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1532,6 +1532,7 @@ struct ieee80211_csa_ie {
struct ieee802_11_elems {
const u8 *ie_start;
size_t total_len;
+ u32 crc;
/* pointers to IEs */
const struct ieee80211_tdls_lnkie *lnk_id;
@@ -2218,10 +2219,10 @@ static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
ieee80211_tx_skb_tid(sdata, skb, 7);
}
-u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
- struct ieee802_11_elems *elems,
- u64 filter, u32 crc, u8 *transmitter_bssid,
- u8 *bss_bssid);
+void ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
+ struct ieee802_11_elems *elems,
+ u64 filter, u32 crc, u8 *transmitter_bssid,
+ u8 *bss_bssid);
static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
bool action,
struct ieee802_11_elems *elems,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 1548f532dc1a..4414e82e71d1 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4102,10 +4102,11 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
*/
if (!ieee80211_is_s1g_beacon(hdr->frame_control))
ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
- ncrc = ieee802_11_parse_elems_crc(variable,
- len - baselen, false, &elems,
- care_about_ies, ncrc,
- mgmt->bssid, bssid);
+ ieee802_11_parse_elems_crc(variable,
+ len - baselen, false, &elems,
+ care_about_ies, ncrc,
+ mgmt->bssid, bssid);
+ ncrc = elems.crc;
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
ieee80211_check_tim(elems.tim, elems.tim_len, bss_conf->aid)) {
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 00543ea9c6b5..ceb6894381e4 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1468,10 +1468,10 @@ static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
return found ? profile_len : 0;
}
-u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
- struct ieee802_11_elems *elems,
- u64 filter, u32 crc, u8 *transmitter_bssid,
- u8 *bss_bssid)
+void ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
+ struct ieee802_11_elems *elems,
+ u64 filter, u32 crc, u8 *transmitter_bssid,
+ u8 *bss_bssid)
{
const struct element *non_inherit = NULL;
u8 *nontransmitted_profile;
@@ -1523,7 +1523,7 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
kfree(nontransmitted_profile);
- return crc;
+ elems->crc = crc;
}
void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
--
2.30.2

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src/patches/linux/linux-5.15-wifi-security-patches-11.patch Normal file
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@ -0,0 +1,96 @@
From 630060f1175676b9cb3a032767f20dbce93616c9 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Oct 2022 20:15:58 +0200
Subject: [PATCH] mac80211: mlme: find auth challenge directly
commit 49a765d6785e99157ff5091cc37485732496864e upstream.
There's no need to parse all elements etc. just to find the
authentication challenge - use cfg80211_find_elem() instead.
This also allows us to remove WLAN_EID_CHALLENGE handling
from the element parsing entirely.
Link: https://lore.kernel.org/r/20210920154009.45f9b3a15722.Ice3159ffad03a007d6154cbf1fb3a8c48489e86f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/ieee80211_i.h | 2 --
net/mac80211/mlme.c | 11 ++++++-----
net/mac80211/util.c | 4 ----
3 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 5ea38ae65809..c5f0ff805010 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1542,7 +1542,6 @@ struct ieee802_11_elems {
const u8 *supp_rates;
const u8 *ds_params;
const struct ieee80211_tim_ie *tim;
- const u8 *challenge;
const u8 *rsn;
const u8 *rsnx;
const u8 *erp_info;
@@ -1596,7 +1595,6 @@ struct ieee802_11_elems {
u8 ssid_len;
u8 supp_rates_len;
u8 tim_len;
- u8 challenge_len;
u8 rsn_len;
u8 rsnx_len;
u8 ext_supp_rates_len;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 4414e82e71d1..548cd14c5503 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2889,17 +2889,17 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
+ const struct element *challenge;
u8 *pos;
- struct ieee802_11_elems elems;
u32 tx_flags = 0;
struct ieee80211_prep_tx_info info = {
.subtype = IEEE80211_STYPE_AUTH,
};
pos = mgmt->u.auth.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
- mgmt->bssid, auth_data->bss->bssid);
- if (!elems.challenge)
+ challenge = cfg80211_find_elem(WLAN_EID_CHALLENGE, pos,
+ len - (pos - (u8 *)mgmt));
+ if (!challenge)
return;
auth_data->expected_transaction = 4;
drv_mgd_prepare_tx(sdata->local, sdata, &info);
@@ -2907,7 +2907,8 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_INTFL_MLME_CONN_TX;
ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
- elems.challenge - 2, elems.challenge_len + 2,
+ (void *)challenge,
+ challenge->datalen + sizeof(*challenge),
auth_data->bss->bssid, auth_data->bss->bssid,
auth_data->key, auth_data->key_len,
auth_data->key_idx, tx_flags);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index ceb6894381e4..664c32b6db19 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1117,10 +1117,6 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
} else
elem_parse_failed = true;
break;
- case WLAN_EID_CHALLENGE:
- elems->challenge = pos;
- elems->challenge_len = elen;
- break;
case WLAN_EID_VENDOR_SPECIFIC:
if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
pos[2] == 0xf2) {
--
2.30.2

1179
src/patches/linux/linux-5.15-wifi-security-patches-12.patch Normal file
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130
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@ -0,0 +1,130 @@
From 7d998f6b7365d50a9905bf57fd28b41c7ebe8e9d Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Oct 2022 20:16:00 +0200
Subject: [PATCH] mac80211: fix memory leaks with element parsing
commit 8223ac199a3849257e86ec27865dc63f034b1cf1 upstream.
My previous commit 5d24828d05f3 ("mac80211: always allocate
struct ieee802_11_elems") had a few bugs and leaked the new
allocated struct in a few error cases, fix that.
Fixes: 5d24828d05f3 ("mac80211: always allocate struct ieee802_11_elems")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20211001211108.9839928e42e0.Ib81ca187d3d3af7ed1bfeac2e00d08a4637c8025@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/agg-rx.c | 3 ++-
net/mac80211/ibss.c | 10 +++++-----
net/mac80211/mlme.c | 36 ++++++++++++++++++------------------
3 files changed, 25 insertions(+), 24 deletions(-)
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index ffa4f31f6c2b..0d2bab9d351c 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -499,13 +499,14 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
elems = ieee802_11_parse_elems(mgmt->u.action.u.addba_req.variable,
ies_len, true, mgmt->bssid, NULL);
if (!elems || elems->parse_error)
- return;
+ goto free;
}
__ieee80211_start_rx_ba_session(sta, dialog_token, timeout,
start_seq_num, ba_policy, tid,
buf_size, true, false,
elems ? elems->addba_ext_ie : NULL);
+free:
kfree(elems);
}
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 4b721b48f86a..48e0260f3424 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -1663,11 +1663,11 @@ void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
mgmt->u.action.u.chan_switch.variable,
ies_len, true, mgmt->bssid, NULL);
- if (!elems || elems->parse_error)
- break;
-
- ieee80211_rx_mgmt_spectrum_mgmt(sdata, mgmt, skb->len,
- rx_status, elems);
+ if (elems && !elems->parse_error)
+ ieee80211_rx_mgmt_spectrum_mgmt(sdata, mgmt,
+ skb->len,
+ rx_status,
+ elems);
kfree(elems);
break;
}
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 45efa1d1c550..cc6d38a2e6d5 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3374,8 +3374,10 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
GFP_ATOMIC);
rcu_read_unlock();
- if (!bss_ies)
- return false;
+ if (!bss_ies) {
+ ret = false;
+ goto out;
+ }
bss_elems = ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
false, mgmt->bssid,
@@ -4358,13 +4360,11 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
mgmt->u.action.u.chan_switch.variable,
ies_len, true, mgmt->bssid, NULL);
- if (!elems || elems->parse_error)
- break;
-
- ieee80211_sta_process_chanswitch(sdata,
- rx_status->mactime,
- rx_status->device_timestamp,
- elems, false);
+ if (elems && !elems->parse_error)
+ ieee80211_sta_process_chanswitch(sdata,
+ rx_status->mactime,
+ rx_status->device_timestamp,
+ elems, false);
kfree(elems);
} else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
struct ieee802_11_elems *elems;
@@ -4384,17 +4384,17 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
mgmt->u.action.u.ext_chan_switch.variable,
ies_len, true, mgmt->bssid, NULL);
- if (!elems || elems->parse_error)
- break;
+ if (elems && !elems->parse_error) {
+ /* for the handling code pretend it was an IE */
+ elems->ext_chansw_ie =
+ &mgmt->u.action.u.ext_chan_switch.data;
- /* for the handling code pretend this was also an IE */
- elems->ext_chansw_ie =
- &mgmt->u.action.u.ext_chan_switch.data;
+ ieee80211_sta_process_chanswitch(sdata,
+ rx_status->mactime,
+ rx_status->device_timestamp,
+ elems, false);
+ }
- ieee80211_sta_process_chanswitch(sdata,
- rx_status->mactime,
- rx_status->device_timestamp,
- elems, false);
kfree(elems);
}
break;
--
2.30.2

107
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@ -0,0 +1,107 @@
From de124365a7d2deed22cf706583930f28d537ff0f Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Oct 2022 20:16:01 +0200
Subject: [PATCH] wifi: mac80211: fix MBSSID parsing use-after-free
commit ff05d4b45dd89b922578dac497dcabf57cf771c6
When we parse a multi-BSSID element, we might point some
element pointers into the allocated nontransmitted_profile.
However, we free this before returning, causing UAF when the
relevant pointers in the parsed elements are accessed.
Fix this by not allocating the scratch buffer separately but
as part of the returned structure instead, that way, there
are no lifetime issues with it.
The scratch buffer introduction as part of the returned data
here is taken from MLO feature work done by Ilan.
This fixes CVE-2022-42719.
Fixes: 5023b14cf4df ("mac80211: support profile split between elements")
Co-developed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/ieee80211_i.h | 8 ++++++++
net/mac80211/util.c | 29 ++++++++++++++---------------
2 files changed, 22 insertions(+), 15 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 3633e49239c7..21549a440b38 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1613,6 +1613,14 @@ struct ieee802_11_elems {
/* whether a parse error occurred while retrieving these elements */
bool parse_error;
+
+ /*
+ * scratch buffer that can be used for various element parsing related
+ * tasks, e.g., element de-fragmentation etc.
+ */
+ size_t scratch_len;
+ u8 *scratch_pos;
+ u8 scratch[];
};
static inline struct ieee80211_local *hw_to_local(
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2ac61e68b6b4..354badd32793 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1475,24 +1475,25 @@ struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
u8 *nontransmitted_profile;
int nontransmitted_profile_len = 0;
- elems = kzalloc(sizeof(*elems), GFP_ATOMIC);
+ elems = kzalloc(sizeof(*elems) + len, GFP_ATOMIC);
if (!elems)
return NULL;
elems->ie_start = start;
elems->total_len = len;
- nontransmitted_profile = kmalloc(len, GFP_ATOMIC);
- if (nontransmitted_profile) {
- nontransmitted_profile_len =
- ieee802_11_find_bssid_profile(start, len, elems,
- transmitter_bssid,
- bss_bssid,
- nontransmitted_profile);
- non_inherit =
- cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
- nontransmitted_profile,
- nontransmitted_profile_len);
- }
+ elems->scratch_len = len;
+ elems->scratch_pos = elems->scratch;
+
+ nontransmitted_profile = elems->scratch_pos;
+ nontransmitted_profile_len =
+ ieee802_11_find_bssid_profile(start, len, elems,
+ transmitter_bssid,
+ bss_bssid,
+ nontransmitted_profile);
+ non_inherit =
+ cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
+ nontransmitted_profile,
+ nontransmitted_profile_len);
crc = _ieee802_11_parse_elems_crc(start, len, action, elems, filter,
crc, non_inherit);
@@ -1521,8 +1522,6 @@ struct ieee802_11_elems *ieee802_11_parse_elems_crc(const u8 *start, size_t len,
offsetofend(struct ieee80211_bssid_index, dtim_count))
elems->dtim_count = elems->bssid_index->dtim_count;
- kfree(nontransmitted_profile);
-
elems->crc = crc;
return elems;
--
2.30.2

59
src/patches/linux/linux-5.15-wifi-security-patches-2.patch Normal file
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@ -0,0 +1,59 @@
From 0a861bd25dad508e492c48169509d8c6b9246895 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 28 Sep 2022 22:01:37 +0200
Subject: [PATCH] wifi: cfg80211/mac80211: reject bad MBSSID elements
commit 8f033d2becc24aa6bfd2a5c104407963560caabc upstream.
Per spec, the maximum value for the MaxBSSID ('n') indicator is 8,
and the minimum is 1 since a multiple BSSID set with just one BSSID
doesn't make sense (the # of BSSIDs is limited by 2^n).
Limit this in the parsing in both cfg80211 and mac80211, rejecting
any elements with an invalid value.
This fixes potentially bad shifts in the processing of these inside
the cfg80211_gen_new_bssid() function later.
I found this during the investigation of CVE-2022-41674 fixed by the
previous patch.
Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Fixes: 78ac51f81532 ("mac80211: support multi-bssid")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/util.c | 2 ++
net/wireless/scan.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index be1911d8089f..00543ea9c6b5 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1414,6 +1414,8 @@ static size_t ieee802_11_find_bssid_profile(const u8 *start, size_t len,
for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, start, len) {
if (elem->datalen < 2)
continue;
+ if (elem->data[0] < 1 || elem->data[0] > 8)
+ continue;
for_each_element(sub, elem->data + 1, elem->datalen - 1) {
u8 new_bssid[ETH_ALEN];
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index d9ab37a798f4..84c642eae4d8 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -2103,6 +2103,8 @@ static void cfg80211_parse_mbssid_data(struct wiphy *wiphy,
for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID, ie, ielen) {
if (elem->datalen < 4)
continue;
+ if (elem->data[0] < 1 || (int)elem->data[0] > 8)
+ continue;
for_each_element(sub, elem->data + 1, elem->datalen - 1) {
u8 profile_len;
--
2.30.2

49
src/patches/linux/linux-5.15-wifi-security-patches-3.patch Normal file
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@ -0,0 +1,49 @@
From 9e99ca59ed3976921f8891c103d503b6da3e78af Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 29 Sep 2022 21:50:44 +0200
Subject: [PATCH] wifi: cfg80211: ensure length byte is present before access
commit 567e14e39e8f8c6997a1378bc3be615afca86063 upstream.
When iterating the elements here, ensure the length byte is
present before checking it to see if the entire element will
fit into the buffer.
Longer term, we should rewrite this code using the type-safe
element iteration macros that check all of this.
Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Reported-by: Soenke Huster <shuster@seemoo.tu-darmstadt.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/wireless/scan.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 84c642eae4d8..04c9b78b3fec 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -304,7 +304,8 @@ static size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
tmp_old = cfg80211_find_ie(WLAN_EID_SSID, ie, ielen);
tmp_old = (tmp_old) ? tmp_old + tmp_old[1] + 2 : ie;
- while (tmp_old + tmp_old[1] + 2 - ie <= ielen) {
+ while (tmp_old + 2 - ie <= ielen &&
+ tmp_old + tmp_old[1] + 2 - ie <= ielen) {
if (tmp_old[0] == 0) {
tmp_old++;
continue;
@@ -364,7 +365,8 @@ static size_t cfg80211_gen_new_ie(const u8 *ie, size_t ielen,
* copied to new ie, skip ssid, capability, bssid-index ie
*/
tmp_new = sub_copy;
- while (tmp_new + tmp_new[1] + 2 - sub_copy <= subie_len) {
+ while (tmp_new + 2 - sub_copy <= subie_len &&
+ tmp_new + tmp_new[1] + 2 - sub_copy <= subie_len) {
if (!(tmp_new[0] == WLAN_EID_NON_TX_BSSID_CAP ||
tmp_new[0] == WLAN_EID_SSID)) {
memcpy(pos, tmp_new, tmp_new[1] + 2);
--
2.30.2

96
src/patches/linux/linux-5.15-wifi-security-patches-4.patch Normal file
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@ -0,0 +1,96 @@
From bfe29873454f38eb1a511a76144ad1a4848ca176 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 30 Sep 2022 23:44:23 +0200
Subject: [PATCH] wifi: cfg80211: fix BSS refcounting bugs
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
commit 0b7808818cb9df6680f98996b8e9a439fa7bcc2f upstream.
There are multiple refcounting bugs related to multi-BSSID:
- In bss_ref_get(), if the BSS has a hidden_beacon_bss, then
the bss pointer is overwritten before checking for the
transmitted BSS, which is clearly wrong. Fix this by using
the bss_from_pub() macro.
- In cfg80211_bss_update() we copy the transmitted_bss pointer
from tmp into new, but then if we release new, we'll unref
it erroneously. We already set the pointer and ref it, but
need to NULL it since it was copied from the tmp data.
- In cfg80211_inform_single_bss_data(), if adding to the non-
transmitted list fails, we unlink the BSS and yet still we
return it, but this results in returning an entry without
a reference. We shouldn't return it anyway if it was broken
enough to not get added there.
This fixes CVE-2022-42720.
Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Tested-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: a3584f56de1c ("cfg80211: Properly track transmitting and non-transmitting BSS")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/wireless/scan.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 04c9b78b3fec..2e576714e989 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -143,18 +143,12 @@ static inline void bss_ref_get(struct cfg80211_registered_device *rdev,
lockdep_assert_held(&rdev->bss_lock);
bss->refcount++;
- if (bss->pub.hidden_beacon_bss) {
- bss = container_of(bss->pub.hidden_beacon_bss,
- struct cfg80211_internal_bss,
- pub);
- bss->refcount++;
- }
- if (bss->pub.transmitted_bss) {
- bss = container_of(bss->pub.transmitted_bss,
- struct cfg80211_internal_bss,
- pub);
- bss->refcount++;
- }
+
+ if (bss->pub.hidden_beacon_bss)
+ bss_from_pub(bss->pub.hidden_beacon_bss)->refcount++;
+
+ if (bss->pub.transmitted_bss)
+ bss_from_pub(bss->pub.transmitted_bss)->refcount++;
}
static inline void bss_ref_put(struct cfg80211_registered_device *rdev,
@@ -1743,6 +1737,8 @@ cfg80211_bss_update(struct cfg80211_registered_device *rdev,
new->refcount = 1;
INIT_LIST_HEAD(&new->hidden_list);
INIT_LIST_HEAD(&new->pub.nontrans_list);
+ /* we'll set this later if it was non-NULL */
+ new->pub.transmitted_bss = NULL;
if (rcu_access_pointer(tmp->pub.proberesp_ies)) {
hidden = rb_find_bss(rdev, tmp, BSS_CMP_HIDE_ZLEN);
@@ -1983,10 +1979,15 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy,
spin_lock_bh(&rdev->bss_lock);
if (cfg80211_add_nontrans_list(non_tx_data->tx_bss,
&res->pub)) {
- if (__cfg80211_unlink_bss(rdev, res))
+ if (__cfg80211_unlink_bss(rdev, res)) {
rdev->bss_generation++;
+ res = NULL;
+ }
}
spin_unlock_bh(&rdev->bss_lock);
+
+ if (!res)
+ return NULL;
}
trace_cfg80211_return_bss(&res->pub);
--
2.30.2

56
src/patches/linux/linux-5.15-wifi-security-patches-5.patch Normal file
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@ -0,0 +1,56 @@
From 0a8ee682e4f992eccce226b012bba600bb2251e2 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Sat, 1 Oct 2022 00:01:44 +0200
Subject: [PATCH] wifi: cfg80211: avoid nontransmitted BSS list corruption
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
commit bcca852027e5878aec911a347407ecc88d6fff7f upstream.
If a non-transmitted BSS shares enough information (both
SSID and BSSID!) with another non-transmitted BSS of a
different AP, then we can find and update it, and then
try to add it to the non-transmitted BSS list. We do a
search for it on the transmitted BSS, but if it's not
there (but belongs to another transmitted BSS), the list
gets corrupted.
Since this is an erroneous situation, simply fail the
list insertion in this case and free the non-transmitted
BSS.
This fixes CVE-2022-42721.
Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Tested-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/wireless/scan.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 2e576714e989..a21baf7b3612 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -425,6 +425,15 @@ cfg80211_add_nontrans_list(struct cfg80211_bss *trans_bss,
rcu_read_unlock();
+ /*
+ * This is a bit weird - it's not on the list, but already on another
+ * one! The only way that could happen is if there's some BSSID/SSID
+ * shared by multiple APs in their multi-BSSID profiles, potentially
+ * with hidden SSID mixed in ... ignore it.
+ */
+ if (!list_empty(&nontrans_bss->nontrans_list))
+ return -EINVAL;
+
/* add to the list */
list_add_tail(&nontrans_bss->nontrans_list, &trans_bss->nontrans_list);
return 0;
--
2.30.2

39
src/patches/linux/linux-5.15-wifi-security-patches-6.patch Normal file
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@ -0,0 +1,39 @@
From fff244e9171b2ca692469d41c68b36607bd73ab0 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 5 Oct 2022 15:10:09 +0200
Subject: [PATCH] wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
commit 1833b6f46d7e2830251a063935ab464256defe22 upstream.
If the tool on the other side (e.g. wmediumd) gets confused
about the rate, we hit a warning in mac80211. Silence that
by effectively duplicating the check here and dropping the
frame silently (in mac80211 it's dropped with the warning).
Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Tested-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/mac80211_hwsim.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 52a2574b7d13..b228567b2a73 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -3749,6 +3749,8 @@ static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
rx_status.band = channel->band;
rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
+ if (rx_status.rate_idx >= data2->hw->wiphy->bands[rx_status.band]->n_bitrates)
+ goto out;
rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
hdr = (void *)skb->data;
--
2.30.2

60
src/patches/linux/linux-5.15-wifi-security-patches-7.patch Normal file
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@ -0,0 +1,60 @@
From 93a3a32554079432b49cf87f326607b2a2fab4f2 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 5 Oct 2022 21:24:10 +0200
Subject: [PATCH] wifi: mac80211: fix crash in beacon protection for P2P-device
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
commit b2d03cabe2b2e150ff5a381731ea0355459be09f upstream.
If beacon protection is active but the beacon cannot be
decrypted or is otherwise malformed, we call the cfg80211
API to report this to userspace, but that uses a netdev
pointer, which isn't present for P2P-Device. Fix this to
call it only conditionally to ensure cfg80211 won't crash
in the case of P2P-Device.
This fixes CVE-2022-42722.
Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: 9eaf183af741 ("mac80211: Report beacon protection failures to user space")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/rx.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 743e97ba352c..175ead6b19cb 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1982,10 +1982,11 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
if (mmie_keyidx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS ||
mmie_keyidx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS +
- NUM_DEFAULT_BEACON_KEYS) {
- cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
- skb->data,
- skb->len);
+ NUM_DEFAULT_BEACON_KEYS) {
+ if (rx->sdata->dev)
+ cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
+ skb->data,
+ skb->len);
return RX_DROP_MONITOR; /* unexpected BIP keyidx */
}
@@ -2133,7 +2134,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
/* either the frame has been decrypted or will be dropped */
status->flag |= RX_FLAG_DECRYPTED;
- if (unlikely(ieee80211_is_beacon(fc) && result == RX_DROP_UNUSABLE))
+ if (unlikely(ieee80211_is_beacon(fc) && result == RX_DROP_UNUSABLE &&
+ rx->sdata->dev))
cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,
skb->data, skb->len);
--
2.30.2

94
src/patches/linux/linux-5.15-wifi-security-patches-8.patch Normal file
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@ -0,0 +1,94 @@
From d15bb1f6dabe1d2a4155958111bea47db72b599c Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 5 Oct 2022 23:11:43 +0200
Subject: [PATCH] wifi: cfg80211: update hidden BSSes to avoid WARN_ON
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit
commit c90b93b5b782891ebfda49d4e5da36632fefd5d1 upstream.
When updating beacon elements in a non-transmitted BSS,
also update the hidden sub-entries to the same beacon
elements, so that a future update through other paths
won't trigger a WARN_ON().
The warning is triggered because the beacon elements in
the hidden BSSes that are children of the BSS should
always be the same as in the parent.
Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Tested-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/wireless/scan.c | 31 ++++++++++++++++++++-----------
1 file changed, 20 insertions(+), 11 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index a21baf7b3612..f0de22a6caf7 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1609,6 +1609,23 @@ struct cfg80211_non_tx_bss {
u8 bssid_index;
};
+static void cfg80211_update_hidden_bsses(struct cfg80211_internal_bss *known,
+ const struct cfg80211_bss_ies *new_ies,
+ const struct cfg80211_bss_ies *old_ies)
+{
+ struct cfg80211_internal_bss *bss;
+
+ /* Assign beacon IEs to all sub entries */
+ list_for_each_entry(bss, &known->hidden_list, hidden_list) {
+ const struct cfg80211_bss_ies *ies;
+
+ ies = rcu_access_pointer(bss->pub.beacon_ies);
+ WARN_ON(ies != old_ies);
+
+ rcu_assign_pointer(bss->pub.beacon_ies, new_ies);
+ }
+}
+
static bool
cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
struct cfg80211_internal_bss *known,
@@ -1632,7 +1649,6 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
} else if (rcu_access_pointer(new->pub.beacon_ies)) {
const struct cfg80211_bss_ies *old;
- struct cfg80211_internal_bss *bss;
if (known->pub.hidden_beacon_bss &&
!list_empty(&known->hidden_list)) {
@@ -1660,16 +1676,7 @@ cfg80211_update_known_bss(struct cfg80211_registered_device *rdev,
if (old == rcu_access_pointer(known->pub.ies))
rcu_assign_pointer(known->pub.ies, new->pub.beacon_ies);
- /* Assign beacon IEs to all sub entries */
- list_for_each_entry(bss, &known->hidden_list, hidden_list) {
- const struct cfg80211_bss_ies *ies;
-
- ies = rcu_access_pointer(bss->pub.beacon_ies);
- WARN_ON(ies != old);
-
- rcu_assign_pointer(bss->pub.beacon_ies,
- new->pub.beacon_ies);
- }
+ cfg80211_update_hidden_bsses(known, new->pub.beacon_ies, old);
if (old)
kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
@@ -2319,6 +2326,8 @@ cfg80211_update_notlisted_nontrans(struct wiphy *wiphy,
} else {
old = rcu_access_pointer(nontrans_bss->beacon_ies);
rcu_assign_pointer(nontrans_bss->beacon_ies, new_ies);
+ cfg80211_update_hidden_bsses(bss_from_pub(nontrans_bss),
+ new_ies, old);
rcu_assign_pointer(nontrans_bss->ies, new_ies);
if (old)
kfree_rcu((struct cfg80211_bss_ies *)old, rcu_head);
--
2.30.2

126
src/patches/linux/linux-5.15-wifi-security-patches-9.patch Normal file
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@ -0,0 +1,126 @@
From 864f2d3482f4bd0c62b355e35ee8300be8ef488e Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 13 Oct 2022 20:15:56 +0200
Subject: [PATCH] mac80211: mesh: clean up rx_bcn_presp API
commit a5b983c6073140b624f64e79fea6d33c3e4315a0 upstream.
We currently pass the entire elements to the rx_bcn_presp()
method, but only need mesh_config. Additionally, we use the
length of the elements to calculate back the entire frame's
length, but that's confusing - just pass the length of the
frame instead.
Link: https://lore.kernel.org/r/20210920154009.a18ed3d2da6c.I1824b773a0fbae4453e1433c184678ca14e8df45@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/ieee80211_i.h | 7 +++----
net/mac80211/mesh.c | 4 ++--
net/mac80211/mesh_sync.c | 26 ++++++++++++--------------
3 files changed, 17 insertions(+), 20 deletions(-)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index f7bea4af2ddb..4bd55af184b2 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -631,10 +631,9 @@ struct ieee80211_if_ocb {
*/
struct ieee802_11_elems;
struct ieee80211_mesh_sync_ops {
- void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
- u16 stype,
- struct ieee80211_mgmt *mgmt,
- struct ieee802_11_elems *elems,
+ void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
+ struct ieee80211_mgmt *mgmt, unsigned int len,
+ const struct ieee80211_meshconf_ie *mesh_cfg,
struct ieee80211_rx_status *rx_status);
/* should be called with beacon_data under RCU read lock */
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 42bd81a30310..9f6414a68d71 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -1354,8 +1354,8 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
}
if (ifmsh->sync_ops)
- ifmsh->sync_ops->rx_bcn_presp(sdata,
- stype, mgmt, &elems, rx_status);
+ ifmsh->sync_ops->rx_bcn_presp(sdata, stype, mgmt, len,
+ elems.mesh_config, rx_status);
}
int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata)
diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c
index fde93de2b80a..9e342cc2504c 100644
--- a/net/mac80211/mesh_sync.c
+++ b/net/mac80211/mesh_sync.c
@@ -3,6 +3,7 @@
* Copyright 2011-2012, Pavel Zubarev <pavel.zubarev@gmail.com>
* Copyright 2011-2012, Marco Porsch <marco.porsch@s2005.tu-chemnitz.de>
* Copyright 2011-2012, cozybit Inc.
+ * Copyright (C) 2021 Intel Corporation
*/
#include "ieee80211_i.h"
@@ -35,12 +36,12 @@ struct sync_method {
/**
* mesh_peer_tbtt_adjusting - check if an mp is currently adjusting its TBTT
*
- * @ie: information elements of a management frame from the mesh peer
+ * @cfg: mesh config element from the mesh peer (or %NULL)
*/
-static bool mesh_peer_tbtt_adjusting(struct ieee802_11_elems *ie)
+static bool mesh_peer_tbtt_adjusting(const struct ieee80211_meshconf_ie *cfg)
{
- return (ie->mesh_config->meshconf_cap &
- IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING) != 0;
+ return cfg &&
+ (cfg->meshconf_cap & IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING);
}
void mesh_sync_adjust_tsf(struct ieee80211_sub_if_data *sdata)
@@ -76,11 +77,11 @@ void mesh_sync_adjust_tsf(struct ieee80211_sub_if_data *sdata)
}
}
-static void mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
- u16 stype,
- struct ieee80211_mgmt *mgmt,
- struct ieee802_11_elems *elems,
- struct ieee80211_rx_status *rx_status)
+static void
+mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata, u16 stype,
+ struct ieee80211_mgmt *mgmt, unsigned int len,
+ const struct ieee80211_meshconf_ie *mesh_cfg,
+ struct ieee80211_rx_status *rx_status)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = sdata->local;
@@ -101,10 +102,7 @@ static void mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
*/
if (ieee80211_have_rx_timestamp(rx_status))
t_r = ieee80211_calculate_rx_timestamp(local, rx_status,
- 24 + 12 +
- elems->total_len +
- FCS_LEN,
- 24);
+ len + FCS_LEN, 24);
else
t_r = drv_get_tsf(local, sdata);
@@ -119,7 +117,7 @@ static void mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
* dot11MeshNbrOffsetMaxNeighbor non-peer non-MBSS neighbors
*/
- if (elems->mesh_config && mesh_peer_tbtt_adjusting(elems)) {
+ if (mesh_peer_tbtt_adjusting(mesh_cfg)) {
msync_dbg(sdata, "STA %pM : is adjusting TBTT\n",
sta->sta.addr);
goto no_sync;
--
2.30.2