From: Vladis Dronov <vdronov@redhat.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Oliver Neukum <oneukum@suse.com>,
Hans de Goede <hdegoede@redhat.com>,
syzkaller@googlegroups.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, stable <stable@vger.kernel.org>
Subject: Re: [PATCH] usb: usbfs: fix crash in check_ctrlrecip()->usb_find_alt_setting()
Date: Tue, 25 Sep 2018 10:55:54 -0400 (EDT) [thread overview]
Message-ID: <13984886.16016319.1537887354102.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1809251012040.1517-100000@iolanthe.rowland.org>
> What reason is there for having two different fixes for the same bug?
> This one isn't going to get into any mainline trees that don't already
> have c9a4cb204e9e.
I believe this is the right thing to do, so usb_find_alt_setting()
is not called with a known-bad argument.
Honestly, I would change "if (!config)" in usb_find_alt_setting() to
"BUG_ON(!config)" so we know when its callers do smth wrong and go
fix callers. Unfortunately, I understand this hardly will be accepted.
Best regards,
Vladis Dronov | Red Hat, Inc. | Product Security Engineer
next prev parent reply other threads:[~2018-09-25 14:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 12:22 [PATCH] usb: usbfs: fix crash in check_ctrlrecip()->usb_find_alt_setting() Vladis Dronov
2018-09-25 14:14 ` Alan Stern
2018-09-25 14:55 ` Vladis Dronov [this message]
2018-09-25 15:15 ` Alan Stern
2018-09-25 15:17 ` Andrey Konovalov
2018-09-25 17:54 ` Alan Stern
2018-09-25 18:55 ` Vladis Dronov
2018-09-25 20:44 ` Alan Stern
2018-09-26 8:22 ` Vladis Dronov
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