| From | Greg Kroah-Hartman <> | | Subject | [ 66/72] isofs: avoid info leak on export | | Date | Tue, 26 Mar 2013 15:51:49 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Mathias Krause <minipli@googlemail.com>
commit fe685aabf7c8c9f138e5ea900954d295bf229175 upstream.
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> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/isofs/export.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/isofs/export.c +++ b/fs/isofs/export.c @@ -135,6 +135,7 @@ isofs_export_encode_fh(struct dentry *de 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 (connectable && !S_ISDIR(inode->i_mode)) { struct inode *parent;
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