linux-kernel - Re: [PATCH 1/1] digsig: Fix memory leakage in digsig_verify

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Message-ID: <CALLzPKai_9SR2pBDe8fU1sGTf+fN=EDGGU1HKQ-LTdWuP0Ti5Q@mail.gmail.com>
Date:	Wed, 30 Jan 2013 10:39:52 +0200
From:	"Kasatkin, Dmitry" <dmitry.kasatkin@...el.com>
To:	James Morris <jmorris@...ei.org>
Cc:	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 1/1] digsig: Fix memory leakage in digsig_verify_rsa()

On Fri, Jan 25, 2013 at 4:54 PM, Dmitry Kasatkin
<dmitry.kasatkin@...el.com> wrote:
> From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
>
> digsig_verify_rsa() does not free kmalloc'ed buffer returned by
> mpi_get_buffer().
>
> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
> Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@...el.com>
> Cc: stable@...r.kernel.org
> ---
>  lib/digsig.c |    2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/lib/digsig.c b/lib/digsig.c
> index 8c0e629..dc2be7e 100644
> --- a/lib/digsig.c
> +++ b/lib/digsig.c
> @@ -162,6 +162,8 @@ static int digsig_verify_rsa(struct key *key,
>         memset(out1, 0, head);
>         memcpy(out1 + head, p, l);
>
> +       kfree(p);
> +
>         err = pkcs_1_v1_5_decode_emsa(out1, len, mblen, out2, &len);
>         if (err)
>                 goto err;
> --
> 1.7.10.4
>

James, can you please apply this patch.

- Dmitry
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