From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 2dc509305cf956381532792cb8dceef2b1504765 ]
The "rxstatus->rs_keyix" eventually gets passed to test_bit() so we need to ensure that it is within the bitmap.
drivers/net/wireless/ath/ath9k/common.c:46 ath9k_cmn_rx_accept() error: passing untrusted data 'rx_stats->rs_keyix' to 'test_bit()'
Fixes: 4ed1a8d4a257 ("ath9k_htc: use ath9k_cmn_rx_accept") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Acked-by: Toke Høiland-Jørgensen toke@toke.dk Signed-off-by: Kalle Valo quic_kvalo@quicinc.com Link: https://lore.kernel.org/r/20220409061225.GA5447@kili Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c index 6a9c9b4ef2c9..fe4491eff8ca 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c @@ -1004,6 +1004,14 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv, goto rx_next; }
+ if (rxstatus->rs_keyix >= ATH_KEYMAX && + rxstatus->rs_keyix != ATH9K_RXKEYIX_INVALID) { + ath_dbg(common, ANY, + "Invalid keyix, dropping (keyix: %d)\n", + rxstatus->rs_keyix); + goto rx_next; + } + /* Get the RX status information */
memset(rx_status, 0, sizeof(struct ieee80211_rx_status));