From: Dmitry Antipov <dmantipov@yandex.ru> stable inclusion from stable-v5.10.227 commit a0c1e2da652cf70825739bc12d49ea15805690bf category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYPKI CVE: CVE-2024-47718 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 0e735a4c6137262bcefe45bb52fde7b1f5fc6c4d ] In 'rtw_wait_firmware_completion()', always wait for both (regular and wowlan) firmware loading attempts. Otherwise if 'rtw_usb_intf_init()' has failed in 'rtw_usb_probe()', 'rtw_usb_disconnect()' may issue 'ieee80211_free_hw()' when one of 'rtw_load_firmware_cb()' (usually the wowlan one) is still in progress, causing UAF detected by KASAN. Fixes: c8e5695eae99 ("rtw88: load wowlan firmware if wowlan is supported") Reported-by: syzbot+6c6c08700f9480c41fe3@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=6c6c08700f9480c41fe3 Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://patch.msgid.link/20240726114657.25396-1-dmantipov@yandex.ru Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Wang Liang <wangliang74@huawei.com> --- drivers/net/wireless/realtek/rtw88/main.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c index 2ef1416899f0..91eea38f62cd 100644 --- a/drivers/net/wireless/realtek/rtw88/main.c +++ b/drivers/net/wireless/realtek/rtw88/main.c @@ -1007,20 +1007,21 @@ static int rtw_wait_firmware_completion(struct rtw_dev *rtwdev) { struct rtw_chip_info *chip = rtwdev->chip; struct rtw_fw_state *fw; + int ret = 0; fw = &rtwdev->fw; wait_for_completion(&fw->completion); if (!fw->firmware) - return -EINVAL; + ret = -EINVAL; if (chip->wow_fw_name) { fw = &rtwdev->wow_fw; wait_for_completion(&fw->completion); if (!fw->firmware) - return -EINVAL; + ret = -EINVAL; } - return 0; + return ret; } static int rtw_power_on(struct rtw_dev *rtwdev) -- 2.34.1