From: David Miller <davem@davemloft.net>
To: drosenberg@vsecurity.com
Cc: samuel@sortiz.org, netdev@vger.kernel.org, security@kernel.org
Subject: Re: [PATCH] irda: prevent integer underflow in IRLMP_ENUMDEVICES
Date: Thu, 23 Dec 2010 10:09:20 -0800 (PST) [thread overview]
Message-ID: <20101223.100920.48494288.davem@davemloft.net> (raw)
In-Reply-To: <1293062307.9820.331.camel@dan>
From: Dan Rosenberg <drosenberg@vsecurity.com>
Date: Wed, 22 Dec 2010 18:58:27 -0500
> If the user-provided len is less than the expected offset, the
> IRLMP_ENUMDEVICES getsockopt will do a copy_to_user() with a very large
> size value. While this isn't be a security issue on x86 because it will
> get caught by the access_ok() check, it may leak large amounts of kernel
> heap on other architectures. In any event, this patch fixes it.
>
> Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Applied, thanks.
prev parent reply other threads:[~2010-12-23 18:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-22 23:58 [PATCH] irda: prevent integer underflow in IRLMP_ENUMDEVICES Dan Rosenberg
2010-12-23 18:09 ` David Miller [this message]
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