ACK: [SRU Jammy,Kinetic,Lunar,OEM-6.0,OEM-6.1 0/1] CVE-2023-3389

[Luke Nowakowski-Krijger]

Acked-by: Luke Nowakowski-Krijger <luke.nowakowskikrijger at canonical.com>

On Tue, Jul 4, 2023 at 4:53 PM Thadeu Lima de Souza Cascardo <
cascardo at canonical.com> wrote:

> [Impact]
> A race with a linked timeout io_uring OP and poll removal may lead to a
> use-after-free. An unprivileged user can use this to cause a denial of
> service (system crash) or code execution.
>
> [Backport]
> 5.15 had a backport of its own upstream, which was used for both Jammy and
> Kinetic. The original upstream fix applieds to Lunar, OEM-6.1 and OEM-6.0.
>
> [Potential regression]
> Poll removal on io-uring can regress.
>
> Jens Axboe (1):
>   io_uring: hold uring mutex around poll removal
>
>  io_uring/io_uring.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> --
> 2.34.1
>
>
> --
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20230706/f0fe5b65/attachment.html>