From: Joe Perches <joe@perches.com>
To: Kees Cook <keescook@chromium.org>, netdev@vger.kernel.org
Cc: Kalle Valo <kvalo@codeaurora.org>,
libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org,
Daniel Micay <danielmicay@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] libertas: Avoid reading past end of buffer
Date: Wed, 10 May 2017 16:12:54 -0700 [thread overview]
Message-ID: <1494457974.2028.3.camel@perches.com> (raw)
In-Reply-To: <20170510192451.GA115771@beast>
On Wed, 2017-05-10 at 12:24 -0700, Kees Cook wrote:
> Using memcpy() from a string that is shorter than the length copied means
> the destination buffer is being filled with arbitrary data from the kernel
> rodata segment.
another bit of trivia:
> diff --git a/drivers/net/wireless/marvell/libertas/mesh.c b/drivers/net/wireless/marvell/libertas/mesh.c
[]
> @@ -1170,17 +1170,11 @@ int lbs_mesh_ethtool_get_sset_count(struct net_device *dev, int sset)
[]
> + memcpy(s, *mesh_stat_strings, sizeof(mesh_stat_strings));
That * isn't necessary.
next prev parent reply other threads:[~2017-05-10 23:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-10 19:24 [PATCH] libertas: Avoid reading past end of buffer Kees Cook
2017-05-10 23:05 ` Joe Perches
2017-05-11 3:45 ` Kalle Valo
2017-05-10 23:12 ` Joe Perches [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-05-09 23:23 Kees Cook
2017-05-10 4:33 ` Joe Perches
2017-05-10 19:06 ` Kees Cook
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