From: Janne Grunau <j@xxxxxxxxxx>
wpa_supplicant 2.11 sends since 1efdba5fdc2c ("Handle PMKSA flush in the
driver for SAE/OWE offload cases") SSID based PMKSA del commands.
brcmfmac is not prepared and tries to dereference the NULL bssid and
pmkid pointers in cfg80211_pmksa. PMKID_V3 operations support SSID based
updates so copy the SSID.
Fixes: a96202acaea4 ("wifi: brcmfmac: cfg80211: Add support for PMKID_V3 operations")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Janne Grunau <j@xxxxxxxxxx>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 5fe0e671ecb3..826b768196e2 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -4320,9 +4320,16 @@ brcmf_pmksa_v3_op(struct brcmf_if *ifp, struct cfg80211_pmksa *pmksa,
/* Single PMK operation */
pmk_op->count = cpu_to_le16(1);
length += sizeof(struct brcmf_pmksa_v3);
- memcpy(pmk_op->pmk[0].bssid, pmksa->bssid, ETH_ALEN);
- memcpy(pmk_op->pmk[0].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
- pmk_op->pmk[0].pmkid_len = WLAN_PMKID_LEN;
+ if (pmksa->bssid)
+ memcpy(pmk_op->pmk[0].bssid, pmksa->bssid, ETH_ALEN);
+ if (pmksa->pmkid) {
+ memcpy(pmk_op->pmk[0].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
+ pmk_op->pmk[0].pmkid_len = WLAN_PMKID_LEN;
+ }
+ if (pmksa->ssid && pmksa->ssid_len) {
+ memcpy(pmk_op->pmk[0].ssid.SSID, pmksa->ssid, pmksa->ssid_len);
+ pmk_op->pmk[0].ssid.SSID_len = pmksa->ssid_len;
+ }
pmk_op->pmk[0].time_left = cpu_to_le32(alive ? BRCMF_PMKSA_NO_EXPIRY : 0);
}
---
base-commit: 0c3836482481200ead7b416ca80c68a29cfdaabd
change-id: 20240803-brcmfmac_pmksa_del_ssid-3c35efe35330
Best regards,
--
Janne Grunau <j@xxxxxxxxxx>
