ACK: [SRU Jammy, Kinetic, Lunar, Mantic, OEM-5.17, OEM-6.0, OEM-6.1 0/1] CVE-2023-31248

Luke Nowakowski-Krijger luke.nowakowskikrijger at canonical.com
Thu Jul 6 21:30:45 UTC 2023


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

On Thu, Jul 6, 2023 at 2:51 AM Thadeu Lima de Souza Cascardo <
cascardo at canonical.com> wrote:

> [Impact]
> An unprivileged user can trigger a use-after-free on a chain when adding a
> rule by using CHAIN_ID. An attacker could use this to cause denial of
> service (crash) or achieve code execution.
>
> [Backport]
> The fix was applied in the netfilter/nf.git tree and a tag has been pushed.
> It is likely to get merged with the same SHA1. The provenance has been
> added,
> but no SAUCE.
>
> [Test case]
> A reproducer has been tested.
>
> [Potential regression]
> nftables users may regress.
>
> Thadeu Lima de Souza Cascardo (1):
>   netfilter: nf_tables: do not ignore genmask when looking up chain by
>     id
>
>  net/netfilter/nf_tables_api.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
>
> --
> 2.34.1
>
>
> --
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
>
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