ACK: [SRU][J/K][PATCH 0/1] CVE-2023-0266

[Tim Gardner]

On 2/14/23 4:56 PM, Yuxuan Luo wrote:
> [Impact]
> There exists a vulnerability triggering trace in ALSA PCM package for
> specifically 32-bit machines which consequences in calling a sequence sensitive
> function without a lock. This issue may lead to a use-after-free that results
> in a priviledge escalation.
> 
> [Backport]
> Clean cherry pick on both releases.
> 
> [Test]
> Compile and smoke tested.
> 
> [Potential Regression]
> Potential regression resides in `control.c` and `control_compat.c` files with
> likely low risk.
> 
> Clement Lecigne (1):
>    ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF
> 
>   sound/core/control.c | 24 +++++++++++++++---------
>   1 file changed, 15 insertions(+), 9 deletions(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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Tim Gardner
Canonical, Inc