[ 67/72] udf: avoid info leak on export

Greg Kroah-Hartman
2013-03-26T22:52:53Z

From: Mathias Krause <minipli@googlemail.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@googlemail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
fs/udf/namei.c | 1 +
1 file changed, 1 insertion(+)

--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1280,6 +1280,7 @@ 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)) {