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Old 06-23-2008, 07:50 PM
Tim Gardner
 
Default SRU: Bug #242448 - Hardy ecryptfs can cause data loss

This is a multi-part message in MIME format.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=b85452a23dcdeddc4a4ae1816501e 80a16bb14a8

Test Case: see Bug decscription

--
Tim Gardner tim.gardner@ubuntu.com
 
Old 06-23-2008, 08:02 PM
Ben Collins
 
Default SRU: Bug #242448 - Hardy ecryptfs can cause data loss

On Mon, 2008-06-23 at 13:50 -0600, Tim Gardner wrote:
> 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=b85452a23dcdeddc4a4ae1816501e 80a16bb14a8
>
> Test Case: see Bug decscription

Doesn't look like it will change ABI, so ACK from me.


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Old 06-23-2008, 08:20 PM
Stefan Bader
 
Default SRU: Bug #242448 - Hardy ecryptfs can cause data loss

Tim Gardner wrote:
> 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=b85452a23dcdeddc4a4ae1816501e 80a16bb14a8
>
> Test Case: see Bug decscription
>
>
Ack

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https://lists.ubuntu.com/mailman/listinfo/kernel-team
 

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