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| author | Mathias Krause <minipli@googlemail.com> | 2012-07-12 08:46:54 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2012-07-13 11:21:21 +0200 |
| commit | fe685aabf7c8c9f138e5ea900954d295bf229175 (patch) | |
| tree | 2119fbd8546017f7da91c240decccec28478b171 /fs/isofs | |
| parent | 57b9655d01ef057a523e810d29c37ac09b80eead (diff) | |
| download | lwn-fe685aabf7c8c9f138e5ea900954d295bf229175.tar.gz lwn-fe685aabf7c8c9f138e5ea900954d295bf229175.zip | |
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.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/isofs/export.c b/fs/isofs/export.c index aa4356d09eee..1d3804492aa7 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; |