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udf: avoid info leak on export
authorMathias Krause <minipli@googlemail.com>
Thu, 12 Jul 2012 06:46:55 +0000 (08:46 +0200)
committerJan Kara <jack@suse.cz>
Fri, 13 Jul 2012 09:21:21 +0000 (11:21 +0200)
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>
fs/udf/namei.c patch | blob | blame | history

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 18024178ac4c040a3f23181ff2dc1a5cc48f2dc8..c31deb382afd006f26072d6744976b4258bcc202 100644 (file)
--- 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) {