linux-kernel - Re: [PATCH] mISDN: Fix null pointer dereference at mISDN

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Message-Id: <20170811.145635.1954762995141694287.davem@davemloft.net>
Date:   Fri, 11 Aug 2017 14:56:35 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     vasilyev@...ras.ru
Cc:     isdn@...ux-pingi.de, geliangtang@...il.com,
        johannes.berg@...el.com, stephen@...workplumber.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ldv-project@...uxtesting.org
Subject: Re: [PATCH] mISDN: Fix null pointer dereference at mISDN_FsmNew

From: Anton Vasilyev <vasilyev@...ras.ru>
Date: Fri, 11 Aug 2017 15:57:22 +0300

> If mISDN_FsmNew() fails to allocate memory for jumpmatrix
> then null pointer dereference will occur on any write to
> jumpmatrix.
> 
> The patch adds check on successful allocation and
> corresponding error handling.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Anton Vasilyev <vasilyev@...ras.ru>

Applied, thank you.