linux-kernel - Re: [PATCH v2] HID: bigben: fix slab-out-of-bounds Write in bigben

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Message-ID: <nycvar.YFH.7.76.2205061046570.28985@cbobk.fhfr.pm>
Date:   Fri, 6 May 2022 10:47:11 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Dongliang Mu <dzm91@...t.edu.cn>
cc:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Dongliang Mu <mudongliangabcd@...il.com>,
        syzkaller <syzkaller@...glegroups.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] HID: bigben: fix slab-out-of-bounds Write in
 bigben_probe

On Fri, 6 May 2022, Dongliang Mu wrote:

> From: Dongliang Mu <mudongliangabcd@...il.com>
> 
> There is a slab-out-of-bounds Write bug in hid-bigbenff driver.
> The problem is the driver assumes the device must have an input but
> some malicious devices violate this assumption.
> 
> Fix this by checking hid_device's input is non-empty before its usage.
> 
> Reported-by: syzkaller <syzkaller@...glegroups.com>
> Signed-off-by: Dongliang Mu <mudongliangabcd@...il.com>

Applied. thanks.

-- 
Jiri Kosina
SUSE Labs