From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 6 Mar 2023 16:35:11 +0100
Subject: [PATCH] staging: rtl8723bs: Fix key-store index handling
References: bsc#1012628
Patch-mainline: 6.2.7
Git-commit: 05cbcc415c9b8c8bc4f9a09f8e03610a89042f03
commit 05cbcc415c9b8c8bc4f9a09f8e03610a89042f03 upstream.
There are 2 issues with the key-store index handling
1. The non WEP key stores can store keys with indexes 0 - BIP_MAX_KEYID,
this means that they should be an array with BIP_MAX_KEYID + 1
entries. But some of the arrays where just BIP_MAX_KEYID entries
big. While one other array was hardcoded to a size of 6 entries,
instead of using the BIP_MAX_KEYID define.
2. The rtw_cfg80211_set_encryption() and wpa_set_encryption() functions
index check where checking that the passed in key-index would fit
inside both the WEP key store (which only has 4 entries) as well as
in the non WEP key stores. This breaks any attempts to set non WEP
keys with index 4 or 5.
Issue 2. specifically breaks wifi connection with some access points
which advertise PMF support. Without this fix connecting to these
access points fails with the following wpa_supplicant messages:
nl80211: kernel reports: key addition failed
wlan0: WPA: Failed to configure IGTK to the driver
wlan0: RSN: Failed to configure IGTK
wlan0: CTRL-EVENT-DISCONNECTED bssid=... reason=1 locally_generated=1
Fix 1. by using the right size for the key-stores. After this 2. can
safely be fixed by checking the right max-index value depending on the
used algorithm, fixing wifi not working with some PMF capable APs.
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230306153512.162104-1-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
.../staging/rtl8723bs/include/rtw_security.h | 8 ++---
.../staging/rtl8723bs/os_dep/ioctl_cfg80211.c | 26 ++++++++-------
.../staging/rtl8723bs/os_dep/ioctl_linux.c | 33 ++++++++++---------
3 files changed, 36 insertions(+), 31 deletions(-)
diff --git a/drivers/staging/rtl8723bs/include/rtw_security.h b/drivers/staging/rtl8723bs/include/rtw_security.h
index a68b7385..7587fa88 100644
--- a/drivers/staging/rtl8723bs/include/rtw_security.h
+++ b/drivers/staging/rtl8723bs/include/rtw_security.h
@@ -107,13 +107,13 @@ struct security_priv {
u32 dot118021XGrpPrivacy; /* This specify the privacy algthm. used for Grp key */
u32 dot118021XGrpKeyid; /* key id used for Grp Key (tx key index) */
- union Keytype dot118021XGrpKey[BIP_MAX_KEYID]; /* 802.1x Group Key, for inx0 and inx1 */
- union Keytype dot118021XGrptxmickey[BIP_MAX_KEYID];
- union Keytype dot118021XGrprxmickey[BIP_MAX_KEYID];
+ union Keytype dot118021XGrpKey[BIP_MAX_KEYID + 1]; /* 802.1x Group Key, for inx0 and inx1 */
+ union Keytype dot118021XGrptxmickey[BIP_MAX_KEYID + 1];
+ union Keytype dot118021XGrprxmickey[BIP_MAX_KEYID + 1];
union pn48 dot11Grptxpn; /* PN48 used for Grp Key xmit. */
union pn48 dot11Grprxpn; /* PN48 used for Grp Key recv. */
u32 dot11wBIPKeyid; /* key id used for BIP Key (tx key index) */
- union Keytype dot11wBIPKey[6]; /* BIP Key, for index4 and index5 */
+ union Keytype dot11wBIPKey[BIP_MAX_KEYID + 1]; /* BIP Key, for index4 and index5 */
union pn48 dot11wBIPtxpn; /* PN48 used for Grp Key xmit. */
union pn48 dot11wBIPrxpn; /* PN48 used for Grp Key recv. */
diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
index 54004f84..3aba4e6e 100644
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
@@ -711,6 +711,7 @@ static int rtw_cfg80211_ap_set_encryption(struct net_device *dev, struct ieee_pa
static int rtw_cfg80211_set_encryption(struct net_device *dev, struct ieee_param *param, u32 param_len)
{
int ret = 0;
+ u8 max_idx;
u32 wep_key_idx, wep_key_len;
struct adapter *padapter = rtw_netdev_priv(dev);
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
@@ -724,26 +725,29 @@ static int rtw_cfg80211_set_encryption(struct net_device *dev, struct ieee_param
goto exit;
}
- if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
- param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
- param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
- if (param->u.crypt.idx >= WEP_KEYS
- || param->u.crypt.idx >= BIP_MAX_KEYID) {
- ret = -EINVAL;
- goto exit;
- }
- } else {
- {
+ if (param->sta_addr[0] != 0xff || param->sta_addr[1] != 0xff ||
+ param->sta_addr[2] != 0xff || param->sta_addr[3] != 0xff ||
+ param->sta_addr[4] != 0xff || param->sta_addr[5] != 0xff) {
ret = -EINVAL;
goto exit;
}
+
+ if (strcmp(param->u.crypt.alg, "WEP") == 0)
+ max_idx = WEP_KEYS - 1;
+ else
+ max_idx = BIP_MAX_KEYID;
+
+ if (param->u.crypt.idx > max_idx) {
+ netdev_err(dev, "Error crypt.idx %d > %d\n", param->u.crypt.idx, max_idx);
+ ret = -EINVAL;
+ goto exit;
}
if (strcmp(param->u.crypt.alg, "WEP") == 0) {
wep_key_idx = param->u.crypt.idx;
wep_key_len = param->u.crypt.key_len;
- if ((wep_key_idx >= WEP_KEYS) || (wep_key_len <= 0)) {
+ if (wep_key_len <= 0) {
ret = -EINVAL;
goto exit;
}
diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
index 30374a82..40a3157f 100644
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
@@ -46,6 +46,7 @@ static int wpa_set_auth_algs(struct net_device *dev, u32 value)
static int wpa_set_encryption(struct net_device *dev, struct ieee_param *param, u32 param_len)
{
int ret = 0;
+ u8 max_idx;
u32 wep_key_idx, wep_key_len, wep_total_len;
struct ndis_802_11_wep *pwep = NULL;
struct adapter *padapter = rtw_netdev_priv(dev);
@@ -60,19 +61,22 @@ static int wpa_set_encryption(struct net_device *dev, struct ieee_param *param,
goto exit;
}
- if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
- param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
- param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
- if (param->u.crypt.idx >= WEP_KEYS ||
- param->u.crypt.idx >= BIP_MAX_KEYID) {
- ret = -EINVAL;
- goto exit;
- }
- } else {
- {
- ret = -EINVAL;
- goto exit;
- }
+ if (param->sta_addr[0] != 0xff || param->sta_addr[1] != 0xff ||
+ param->sta_addr[2] != 0xff || param->sta_addr[3] != 0xff ||
+ param->sta_addr[4] != 0xff || param->sta_addr[5] != 0xff) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ if (strcmp(param->u.crypt.alg, "WEP") == 0)
+ max_idx = WEP_KEYS - 1;
+ else
+ max_idx = BIP_MAX_KEYID;
+
+ if (param->u.crypt.idx > max_idx) {
+ netdev_err(dev, "Error crypt.idx %d > %d\n", param->u.crypt.idx, max_idx);
+ ret = -EINVAL;
+ goto exit;
}
if (strcmp(param->u.crypt.alg, "WEP") == 0) {
@@ -84,9 +88,6 @@ static int wpa_set_encryption(struct net_device *dev, struct ieee_param *param,
wep_key_idx = param->u.crypt.idx;
wep_key_len = param->u.crypt.key_len;
- if (wep_key_idx > WEP_KEYS)
- return -EINVAL;
-
if (wep_key_len > 0) {
wep_key_len = wep_key_len <= 5 ? 5 : 13;
wep_total_len = wep_key_len + FIELD_OFFSET(struct ndis_802_11_wep, key_material);
--
2.35.3