[Linux-kernel-mentees] [PATCH] net: usb: Fix uninit-was-stored issue in asix_read_cmd()
Himadri Pandya
himadrispandya at gmail.com
Sun Aug 23 08:20:42 UTC 2020
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 at syzkaller.appspotmail.com
Signed-off-by: Himadri Pandya <himadrispandya at gmail.com>
---
drivers/net/usb/asix_common.c | 2 ++
1 file changed, 2 insertions(+)
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
--
2.17.1
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