linux-kernel - Re: [PATCH] ISDN: hfcsusb: checking idx of ep configuration

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Message-Id: <20190715.111048.106149919999844475.davem@davemloft.net>
Date:   Mon, 15 Jul 2019 11:10:48 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     tranmanphong@...il.com
Cc:     syzbot+8750abbc3a46ef47d509@...kaller.appspotmail.com,
        isdn@...ux-pingi.de, gregkh@...uxfoundation.org,
        andreyknvl@...gle.com, bigeasy@...utronix.de,
        gustavo@...eddedor.com, pakki001@....edu,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, netdev@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        skhan@...uxfoundation.org
Subject: Re: [PATCH] ISDN: hfcsusb: checking idx of ep configuration

From: Phong Tran <tranmanphong@...il.com>
Date: Mon, 15 Jul 2019 22:08:14 +0700

> The syzbot test with random endpoint address which made the idx is
> overflow in the table of endpoint configuations.
> 
> this adds the checking for fixing the error report from
> syzbot
> 
> KASAN: stack-out-of-bounds Read in hfcsusb_probe [1]
> The patch tested by syzbot [2]
> 
> Reported-by: syzbot+8750abbc3a46ef47d509@...kaller.appspotmail.com
> 
> [1]:
> https://syzkaller.appspot.com/bug?id=30a04378dac680c5d521304a00a86156bb913522
> [2]:
> https://groups.google.com/d/msg/syzkaller-bugs/_6HBdge8F3E/OJn7wVNpBAAJ
> 
> Signed-off-by: Phong Tran <tranmanphong@...il.com>

Applied.