linux-kernel - [ 028/104] udf: avoid info leak on export

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Date:	Mon, 25 Mar 2013 01:05:52 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, Mathias Krause <minipli@...glemail.com>,
	Jan Kara <jack@...e.cz>
Subject: [ 028/104] udf: avoid info leak on export

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

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

From: Mathias Krause <minipli@...glemail.com>

commit 0143fc5e9f6f5aad4764801015bc8d4b4a278200 upstream.

For type 0x51 the udf.parent_partref member in struct fid gets copied
uninitialized to userland. Fix this by initializing it to 0.

Signed-off-by: Mathias Krause <minipli@...glemail.com>
Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/udf/namei.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1293,6 +1293,7 @@ static int udf_encode_fh(struct dentry *
 	*lenp = 3;
 	fid->udf.block = location.logicalBlockNum;
 	fid->udf.partref = location.partitionReferenceNum;
+	fid->udf.parent_partref = 0;
 	fid->udf.generation = inode->i_generation;
 
 	if (connectable && !S_ISDIR(inode->i_mode)) {


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