linux-kernel - Re: [patch] mdio_bus: NULL dereference on allocation error

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Tue, 12 Jan 2016 14:31:12 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	dan.carpenter@...cle.com
Cc:	f.fainelli@...il.com, andrew@...n.ch, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] mdio_bus: NULL dereference on allocation error

From: Dan Carpenter <dan.carpenter@...cle.com>
Date: Tue, 12 Jan 2016 12:34:36 +0300

> If bus = kzalloc() fails then we end up dereferencing bus when we do
> "bus->irq[i] = PHY_POLL;".  The code is a little simpler if we reverse
> the NULL check and return directly on failure.
> 
> Fixes: e7f4dc3536a4 ('mdio: Move allocation of interrupts into core')
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Applied.