linux-kernel - [PATCH 4.17 20/56] cifs: Fix memory leak in smb2_set

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Date:   Tue, 10 Jul 2018 20:25:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Paulo Alcantara <palcantara@...e.de>,
        Steve French <stfrench@...rosoft.com>,
        Aurelien Aptel <aaptel@...e.com>
Subject: [PATCH 4.17 20/56] cifs: Fix memory leak in smb2_set_ea()

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

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

From: Paulo Alcantara <paulo@...lo.ac>

commit 6aa0c114eceec8cc61715f74a4ce91b048d7561c upstream.

This patch fixes a memory leak when doing a setxattr(2) in SMB2+.

Signed-off-by: Paulo Alcantara <palcantara@...e.de>
Cc: stable@...r.kernel.org
Signed-off-by: Steve French <stfrench@...rosoft.com>
Reviewed-by: Aurelien Aptel <aaptel@...e.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/cifs/smb2ops.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -655,6 +655,8 @@ smb2_set_ea(const unsigned int xid, stru
 
 	rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
 			 len);
+	kfree(ea);
+
 	SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 
 	return rc;