tree 0997d7430d83a976b5e7ff0e2201032a45ccb759
parent 48b512e6857139393cdfce26348c362b87537018
author Tyler Hicks <tyhicks@linux.vnet.ibm.com> 1285227304 -0500
committer Tyler Hicks <tyhicks@linux.vnet.ibm.com> 1288366295 -0500

eCryptfs: Clear LOOKUP_OPEN flag when creating lower file

eCryptfs was passing the LOOKUP_OPEN flag through to the lower file
system, even though ecryptfs_create() doesn't support the flag. A valid
filp for the lower filesystem could be returned in the nameidata if the
lower file system's create() function supported LOOKUP_OPEN, possibly
resulting in unencrypted writes to the lower file.

However, this is only a potential problem in filesystems (FUSE, NFS,
CIFS, CEPH, 9p) that eCryptfs isn't known to support today.

https://bugs.launchpad.net/ecryptfs/+bug/641703

Reported-by: Kevin Buhr
Cc: stable <stable@kernel.org>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>