| From | Paul Gortmaker <> | Subject | [v2.6.34-stable 163/213] isofs: avoid info leak on export | Date | Wed, 5 Feb 2014 15:01:58 -0500 |
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From: Mathias Krause <minipli@googlemail.com>
------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. -------------------
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> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> --- fs/isofs/export.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/isofs/export.c b/fs/isofs/export.c index ed752cb38474..344aa606eecd 100644 --- a/fs/isofs/export.c +++ b/fs/isofs/export.c @@ -131,6 +131,7 @@ isofs_export_encode_fh(struct dentry *dentry, 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; -- 1.8.5.2
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