APPLIED: [PATCH 0/1] [Focal linux-azure]Azure: keys: Do not cache key in task struct if key is requested from kernel thread

[Tim Gardner]

On 4/26/23 11:19 AM, Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/2017801
> 
> SRU Justification
> 
> [Impact]
> 
> The key which gets cached in task structure from a kernel thread does not
> get invalidated even after expiry. Due to which, a new key request from
> kernel thread will be served with the cached key if it's present in task
> struct irrespective of the key validity.
> 
> [Fix]
> 
> commit 47f9e4c924025c5be87959d3335e66fcbb7f6b5c ('keys: Do not cache key in task
> struct if key is requested from kernel thread')
> Fixes: 7743c48e54ee ("keys: Cache result of request_key*() temporarily in task_struct")
> 
> [Regression potential]
> 
> DNS keys used by CIFS could get confused.
> 
> [Other Info]
> 
> Though this commit is part of stable updates v5.4.240, MSFT has requested that
> it be applied in advance since Focal is only up to v5.4.233. Linux-azure 5.4
> is the only kernel that does not have this patch.
> 
> SF: #00359129
> 
Applied to Focal linux-azure:master-next. Thanks.

-rtg
-- 
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Tim Gardner
Canonical, Inc