linux-kernel - Re: [PATCH] Bluetooth: hidp: fix buffer overflow

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Message-Id: <558EAA47-F2D4-4DA0-8C95-B5440AE4F3DE@holtmann.org>
Date:   Tue, 23 Apr 2019 19:04:58 +0200
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Young Xiao <92siuyang@...il.com>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        "David S. Miller" <davem@...emloft.net>, viro@...iv.linux.org.uk,
        linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Young Xiao <YangX92@...mail.com>
Subject: Re: [PATCH] Bluetooth: hidp: fix buffer overflow

Hi Young,


> Struct ca is copied from userspace. It is not checked whether the "name"
> field is NULL terminated, which allows local users to obtain potentially
> sensitive information from kernel stack memory, via a HIDPCONNADD command.
> 
> This vulnerability is similar to CVE-2011-1079.
> 
> Signed-off-by: Young Xiao <YangX92@...mail.com>
> ---
> net/bluetooth/hidp/sock.c | 1 +
> 1 file changed, 1 insertion(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel