diff mbox series

net: usb: Fix uninit-was-stored issue in asix_read_cmd()

Message ID 20200823082042.20816-1-himadrispandya@gmail.com
State New
Headers show
Series net: usb: Fix uninit-was-stored issue in asix_read_cmd() | expand

Commit Message

Himadri Pandya Aug. 23, 2020, 8:20 a.m. UTC
Initialize the buffer before passing it to usb_read_cmd() function(s) to
fix the uninit-was-stored issue in asix_read_cmd().

Fixes: KMSAN: kernel-infoleak in raw_ioctl
Reported by: syzbot+a7e220df5a81d1ab400e@syzkaller.appspotmail.com

Signed-off-by: Himadri Pandya <himadrispandya@gmail.com>
---
 drivers/net/usb/asix_common.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
index e39f41efda3e..a67ea1971b78 100644
--- a/drivers/net/usb/asix_common.c
+++ b/drivers/net/usb/asix_common.c
@@ -17,6 +17,8 @@  int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
 
 	BUG_ON(!dev);
 
+	memset(data, 0, size);
+
 	if (!in_pm)
 		fn = usbnet_read_cmd;
 	else