linux-kernel - [ 01/26] digsig: Fix memory leakage in digsig_verify

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Message-Id: <20130208004627.470836954@linuxfoundation.org>
Date:	Thu,  7 Feb 2013 16:57:29 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	Dmitry Kasatkin <dmitry.kasatkin@...el.com>,
	James Morris <james.l.morris@...cle.com>
Subject: [ 01/26] digsig: Fix memory leakage in digsig_verify_rsa()

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>

commit 7810cc1e7721220f1ed2a23ca95113d6434f6dcd upstream.

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>
Signed-off-by: James Morris <james.l.morris@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 lib/digsig.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/lib/digsig.c
+++ b/lib/digsig.c
@@ -162,6 +162,8 @@ static int digsig_verify_rsa(struct 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;


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