From: Peter Kosyh <pkosyh@xxxxxxxxx> commit 473118917cc33b98510880458c724bd833653db6 upstream. Return value of a function ath10k_get_arvif() is dereferenced without checking for null in ath10k_wmi_event_tdls_peer(), but it is usually checked for this function. Make ath10k_wmi_event_tdls_peer() do check retval of ath10k_get_arvif(). Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Peter Kosyh <pkosyh@xxxxxxxxx> Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20221003091217.322598-1-pkosyh@xxxxxxxxx Signed-off-by: Dmitry Kandybka <d.kandybka@xxxxxxxxx> --- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 0eeb74245372..72da02fc68ea 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -584,7 +584,14 @@ static void ath10k_wmi_event_tdls_peer(struct ath10k *ar, struct sk_buff *skb) ath10k_warn(ar, "did not find station from tdls peer event"); goto exit; } + arvif = ath10k_get_arvif(ar, __le32_to_cpu(ev->vdev_id)); + if (!arvif) { + ath10k_warn(ar, "no vif for vdev_id %d found", + __le32_to_cpu(ev->vdev_id)); + goto exit; + } + ieee80211_tdls_oper_request( arvif->vif, station->addr, NL80211_TDLS_TEARDOWN, -- 2.43.5
