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

[Thadeu Lima de Souza Cascardo]

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(-)

-- 
2.32.0