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authorMathias Krause <minipli@googlemail.com>2012-07-12 08:46:55 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-28 12:12:27 -0700
commit66de393d66371b070699ffcb6207cf1abc8b581a (patch)
tree8a09ac4ccb2669d72e1a92653f742b639f032301
parent19b437682b56a924993979dff408a72e2c5380e6 (diff)
udf: avoid info leak on export
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>
-rw-r--r--fs/udf/namei.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 38de8f234b94..78bff11169ea 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1280,6 +1280,7 @@ static int udf_encode_fh(struct dentry *de, __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 (connectable && !S_ISDIR(inode->i_mode)) {