APPLIED[L/J, HWE-5.19]/Cmnt: [SRU Jammy, Kinetic, Lunar, OEM-6.0, OEM-6.1 0/1] CVE-2023-3389

Stefan Bader stefan.bader at
Fri Jul 7 09:44:49 UTC 2023

On 05.07.23 01:51, Thadeu Lima de Souza Cascardo 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(+)

Applied to lunar,jammy:linux/master-next and 
jammy:linux-hwe-5.19/hwe-5.19-next (since Kinetic goes EOL). Thanks.

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