From: Toke Høiland-Jørgensen <toke@toke.dk> mainline inclusion from mainline-v6.16-rc1 commit ac4e317a95a1092b5da5b9918b7118759342641c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICJTGW CVE: CVE-2025-38157 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- A malicious USB device can send a WMI_SWBA_EVENTID event from an ath9k_htc-managed device before beaconing has been enabled. This causes a device-by-zero error in the driver, leading to either a crash or an out of bounds read. Prevent this by aborting the handling in ath9k_htc_swba() if beacons are not enabled. Reported-by: Robert Morris <rtm@csail.mit.edu> Closes: https://lore.kernel.org/r/88967.1743099372@localhost Fixes: 832f6a18fc2a ("ath9k_htc: Add beacon slots") Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Link: https://patch.msgid.link/20250402112217.58533-1-toke@toke.dk Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com> Signed-off-by: Yongjian Sun <sunyongjian1@huawei.com> --- drivers/net/wireless/ath/ath9k/htc_drv_beacon.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c index 533471e69400..18c7654bc539 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c @@ -290,6 +290,9 @@ void ath9k_htc_swba(struct ath9k_htc_priv *priv, struct ath_common *common = ath9k_hw_common(priv->ah); int slot; + if (!priv->cur_beacon_conf.enable_beacon) + return; + if (swba->beacon_pending != 0) { priv->beacon.bmisscnt++; if (priv->beacon.bmisscnt > BSTUCK_THRESHOLD) { -- 2.39.2