stuartl/linux-stable
1
0
Fork 0
mirror of https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable.git synced 2025-10-13 22:27:36 +10:00
Code Issues Releases Wiki Activity

usb: net: sierra: check for no status endpoint

Browse Source 
[ Upstream commit 4c4ca3c461 ]

The driver checks for having three endpoints and
having bulk in and out endpoints, but not that
the third endpoint is interrupt input.
Rectify the omission.

Reported-by: syzbot+3f89ec3d1d0842e95d50@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-usb/686d5a9f.050a0220.1ffab7.0017.GAE@google.com/
Tested-by: syzbot+3f89ec3d1d0842e95d50@syzkaller.appspotmail.com
Fixes: eb4fd8cd35 ("net/usb: add sierra_net.c driver")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20250714111326.258378-1-oneukum@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Oliver Neukum 2025-07-14 13:12:56 +02:00 committed by Greg Kroah-Hartman
parent 27591d9261
commit 5dd6a44174
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -689,6 +689,10 @@ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
status);
return -ENODEV;
}
if (!dev->status) {
dev_err(&dev->udev->dev, "No status endpoint found");
return -ENODEV;
}
/* Initialize sierra private data */
priv = kzalloc(sizeof *priv, GFP_KERNEL);
if (!priv)