udf: avoid info leak on export

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 <[email protected]> Signed-off-by: Jan Kara <[email protected]>
Red54 · Jul 13, 2012 · 0143fc5 · 0143fc5
1 parent fe685aa
commit 0143fc5
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
@@ -1279,6 +1279,7 @@ static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
 	*lenp = 3;
 	fid->udf.block = location.logicalBlockNum;
 	fid->udf.partref = location.partitionReferenceNum;
+	fid->udf.parent_partref = 0;
 	fid->udf.generation = inode->i_generation;
 
 	if (parent) {