[PATCH 6.0 0414/1073] wifi: plfxlc: fix potential memory leak in __lf_x_usb_enable_rx()

Greg Kroah-Hartman
2022-12-28T15:48:08Z

From: Ziyang Xuan <william.xuanziyang@huawei.com>

[ Upstream commit 895b3b06efc285c1245242e9638b9ae251dc13ec ]

urbs does not be freed in exception paths in __lf_x_usb_enable_rx().
That will trigger memory leak. To fix it, add kfree() for urbs within
"error" label. Compile tested only.

Fixes: 68d57a07bfe5 ("wireless: add plfxlc driver for pureLiFi X, XL, XC devices")
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221119051900.1192401-1-william.xuanziyang@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/purelifi/plfxlc/usb.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/purelifi/plfxlc/usb.c b/drivers/net/wireless/purelifi/plfxlc/usb.c
index 39e54b3787d6..76d0a778636a 100644
--- a/drivers/net/wireless/purelifi/plfxlc/usb.c
+++ b/drivers/net/wireless/purelifi/plfxlc/usb.c
@@ -247,6 +247,7 @@ static int __lf_x_usb_enable_rx(struct plfxlc_usb *usb)
for (i = 0; i < RX_URBS_COUNT; i++)
free_rx_urb(urbs[i]);
}
+ kfree(urbs);
return r;
}

--
2.35.1