ACK: [SRU Bionic 0/2] CVE-2018-25020 // LP: #1953287

[Kleber Souza]

On 08.12.21 15:27, Thadeu Lima de Souza Cascardo wrote:
> BugLink: https://bugs.launchpad.net/bugs/1953287
>
> [Impact]
>
> A CBPF program jumping over a large number of instructions may lead to kernel
> code execution.
>
> The test might fail with EINVAL or EOPNOTSUPP, which must be accounted for on
> different kernel versions.
>
> [Test case]
> Load test_bpf module.
> Userspace program that causes crash.
>
> [Potential regression]
> Some CBPF and EBPF programs might not load.
>
>
> Daniel Borkmann (1):
>    bpf: fix truncated jump targets on heavy expansions
>
> Thadeu Lima de Souza Cascardo (1):
>    UBUNTU: SAUCE: Revert "bpf: add also cbpf long jump test cases with
>      heavy expansion"
>
>   kernel/bpf/core.c | 63 ++++++++++++++++++++++++++++++++++++++++-------
>   lib/test_bpf.c    | 63 -----------------------------------------------
>   net/core/filter.c | 11 +++++++--
>   3 files changed, 63 insertions(+), 74 deletions(-)
>

Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>

Thanks