ACK: [SRU Xenial 0/1] CVE-2021-29154

[Guilherme Piccoli]

On Fri, Apr 9, 2021 at 4:47 PM Thadeu Lima de Souza Cascardo
<cascardo at canonical.com> wrote:
>
> [Impact]
>
> See https://www.openwall.com/lists/oss-security/2021/04/08/1.
>
> [Test case]
>
> Ran LTP bpf tests and test_kmod.sh from kselftests, that use the test_bpf
> module.
>
> [Regression potential]
>
> Some BPF code might fail to load and this might prevent seccomp, systemd, etc,
> from correctly running services, so boot may fail and safeguards might not run.
>
>
> Piotr Krysiuk (1):
>   UBUNTU: SAUCE: bpf, x86: Validate computation of branch displacements
>     for x86-64
>
>  arch/x86/net/bpf_jit_comp.c | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
>

Thanks Cascardo, LGTM:

Acked-by: Guilherme G. Piccoli <gpiccoli at canonical.com>