brain-hackers_pepepper-mirror
/
linux-brain
mirror of https://github.com/brain-hackers/linux-brain.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

net: usb: ax88179_178a: initialize local variables before use 

commit bd78980be1a68d14524c51c4b4170782fada622b upstream.

Use memset to initialize local array in drivers/net/usb/ax88179_178a.c, and
also set a local u16 and u32 variable to 0. Fixes a KMSAN found uninit-value bug
reported by syzbot at:
https://syzkaller.appspot.com/bug?id=00371c73c72f72487c1d0bfe0cc9d00de339d5aa

Reported-by: syzbot+4993e4a0e237f1b53747@syzkaller.appspotmail.com
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Phillip Potter 2021-04-01 23:36:07 +01:00 committed by Greg Kroah-Hartman
parent 55714a57f3
commit 354520d3ea
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/usb/ax88179_178a.c
View File

@ -295,12 +295,12 @@ static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
int ret;
if (2 == size) {
u16 buf;
u16 buf = 0;
ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
le16_to_cpus(&buf);
*((u16 *)data) = buf;
} else if (4 == size) {
u32 buf;
u32 buf = 0;
ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
le32_to_cpus(&buf);
*((u32 *)data) = buf;