SRU: Bug #242448 - Hardy ecryptfs can cause data loss

Tim Gardner tcanonical at tpi.com
Mon Jun 23 20:50:27 BST 2008


SRU Justification:

Impact: ecryptfs can cause loss of data in certain scenarios

Patch Description: cherry-picked 2.6.25.y
d3e49afbb66109613c3474f2273f5830ac2dcb09. The page decrypt calls in
ecryptfs_write() are both pointless and buggy. Pointless because
ecryptfs_get_locked_page() has already brought the page up to date, and
buggy because prior mmap writes will just be blown away by the decrypt
call. This patch also removes the declaration of a now-nonexistent
function ecryptfs_write_zeros().

Patch:
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-hardy.git;a=commit;h=b85452a23dcdeddc4a4ae1816501e80a16bb14a8

Test Case: see Bug decscription

-- 
Tim Gardner tim.gardner at ubuntu.com
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