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Message-ID: <4A22965A.6030201@redhat.com> Date: Sun, 31 May 2009 10:38:18 -0400 From: Rik van Riel <riel@...hat.com> To: "Larry H." <research@...reption.com> CC: linux-kernel@...r.kernel.org, pageexec@...email.hu, linux-mm@...ck.org, Linus Torvalds <torvalds@...l.org>, Alan Cox <alan@...rguk.ukuu.org.uk> Subject: Re: [PATCH] Use kzfree in crypto API context initialization and key/iv handling Larry H. wrote: > [PATCH] Use kzfree in crypto API context initialization and key/iv handling > > This patch replaces the kfree() calls within the crypto API (algorithms, > key setup and handling, etc) with kzfree(), to enforce sanitization of > the allocated memory. > > This prevents such information from persisting on memory and eventually > leak to other kernel users or during coldboot attacks. > > This patch replaces kfree() for context (algorithm meta-data) structures > too. Those are initialized or released once, and remain in use during the > lifetime of the cipher/algorithm instance, therefore no performance impact > exists for those specific changes. > > This patch doesn't affect fastpaths. > > Signed-off-by: Larry Highsmith <research@...reption.com> Acked-by: Rik van Riel <riel@...hat.com> -- All rights reversed. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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