linux-kernel - Re: [syzbot] [usb?] KMSAN: kernel-usb-infoleak in usbhid_raw

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Message-ID: <9c3926ff-1012-4da4-b477-41a305aa0f98@rowland.harvard.edu>
Date: Mon, 14 Jul 2025 09:36:40 -0400
From: Alan Stern <stern@...land.harvard.edu>
To: syzbot <syzbot+fbe9fff1374eefadffb9@...kaller.appspotmail.com>
Cc: gregkh@...uxfoundation.org, hdanton@...a.com,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [usb?] KMSAN: kernel-usb-infoleak in usbhid_raw_request

On Sun, Jul 13, 2025 at 10:08:03PM -0700, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger any issue:
> 
> Reported-by: syzbot+fbe9fff1374eefadffb9@...kaller.appspotmail.com
> Tested-by: syzbot+fbe9fff1374eefadffb9@...kaller.appspotmail.com
> 
> Tested on:
> 
> commit:         c2ca42f1 HID: core: do not bypass hid_hw_raw_request
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
> console output: https://syzkaller.appspot.com/x/log.txt?x=138330f0580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=7367e34c3d60253b
> dashboard link: https://syzkaller.appspot.com/bug?extid=fbe9fff1374eefadffb9
> compiler:       Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
> 
> Note: no patches were applied.
> Note: testing is done by a robot and is best-effort only.

#syz dup: [syzbot] [usb?] KASAN: slab-out-of-bounds Read in mon_copy_to_buff