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authorMathias Krause <minipli@googlemail.com>2012-07-12 08:46:54 +0200
committerJan Kara <jack@suse.cz>2012-07-13 11:21:21 +0200
commitfe685aabf7c8c9f138e5ea900954d295bf229175 (patch)
tree2119fbd8546017f7da91c240decccec28478b171 /fs/isofs
parent57b9655d01ef057a523e810d29c37ac09b80eead (diff)
downloadlinaro-lsk-fe685aabf7c8c9f138e5ea900954d295bf229175.tar.gz
isofs: avoid info leak on export
For type 1 the parent_offset member in struct isofs_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>
Diffstat (limited to 'fs/isofs')
-rw-r--r--fs/isofs/export.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/isofs/export.c b/fs/isofs/export.c
index aa4356d09ee..1d3804492aa 100644
--- a/fs/isofs/export.c
+++ b/fs/isofs/export.c
@@ -134,6 +134,7 @@ isofs_export_encode_fh(struct inode *inode,
len = 3;
fh32[0] = ei->i_iget5_block;
fh16[2] = (__u16)ei->i_iget5_offset; /* fh16 [sic] */
+ fh16[3] = 0; /* avoid leaking uninitialized data */
fh32[2] = inode->i_generation;
if (parent) {
struct iso_inode_info *eparent;