APPLIED: [SRU][F/J/K/L][PATCH 0/1] CVE-2023-3390

[Luke Nowakowski-Krijger]

Applied to focal, jammy, and lunar linux master-next,
also applied to jammy:linux-hwe-5.19 as kinetic is going EOL.

Thanks,
- Luke

On Mon, Jul 3, 2023 at 3:21 PM Yuxuan Luo <yuxuan.luo at canonical.com> wrote:

> [Impact]
> A use-after-free vulnerability was found in the Linux kernel's netfilter
> subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with
> NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same
> transaction causing a use-after-free vulnerability. This flaw allows a
> local
> attacker with user access to cause a privilege escalation issue.
>
> [Backport]
> For J/K/L, it is a clean cherry pick.
> For Focal, the goto labels were modified in commit 3c5e44622011
> ("netfilter:
> nf_tables: memleak in hw offload abort path"), but since that is not a
> clean
> cherry pick, the alternative approach is to backport the fix patch by
> incorporate the new line added for 'err_release_rule' to the 'err2' label.
>
> [Test]
> Compile and boot tested.
>
> [Potential Regression]
> Expect low regression potential.
>
> Pablo Neira Ayuso (1):
>   netfilter: nf_tables: incorrect error path handling with
>     NFT_MSG_NEWRULE
>
>  net/netfilter/nf_tables_api.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> --
> 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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