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* [PATCH bpf v3 0/9] bpf fix to prevent oob under speculation
@ 2019-01-02 23:58 Daniel Borkmann
  2019-01-02 23:58 ` [PATCH bpf v3 1/9] bpf: move {prev_,}insn_idx into verifier env Daniel Borkmann
                   ` (9 more replies)
  0 siblings, 10 replies; 19+ messages in thread
From: Daniel Borkmann @ 2019-01-02 23:58 UTC (permalink / raw)
  To: ast; +Cc: jannh, davem, jakub.kicinski, netdev, Daniel Borkmann

This set fixes an out of bounds case under speculative execution
by implementing masking of pointer alu into the verifier. For
details please see the individual patches.

Thanks!

v2 -> v3:
  - 8/9: change states_equal condition into old->speculative &&
    !cur->speculative, thanks Jakub!
  - 8/9: remove incorrect speculative state test in
    propagate_liveness(), thanks Jakub!
v1 -> v2:
  - Typo fixes in commit msg and a comment, thanks David!

Daniel Borkmann (9):
  bpf: move {prev_,}insn_idx into verifier env
  bpf: move tmp variable into ax register in interpreter
  bpf: enable access to ax register also from verifier rewrite
  bpf: restrict map value pointer arithmetic for unprivileged
  bpf: restrict stack pointer arithmetic for unprivileged
  bpf: restrict unknown scalars of mixed signed bounds for unprivileged
  bpf: fix check_map_access smin_value test when pointer contains offset
  bpf: prevent out of bounds speculation on pointer arithmetic
  bpf: add various test cases to selftests

 include/linux/bpf_verifier.h                |   12 +
 include/linux/filter.h                      |   10 +-
 kernel/bpf/core.c                           |   54 +-
 kernel/bpf/verifier.c                       |  336 ++++++--
 tools/testing/selftests/bpf/test_verifier.c | 1146 ++++++++++++++++++++++++++-
 5 files changed, 1451 insertions(+), 107 deletions(-)

-- 
2.9.5

^ permalink raw reply	[flat|nested] 19+ messages in thread
end of thread, other threads:[~2019-01-24 11:53 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-01-02 23:58 [PATCH bpf v3 0/9] bpf fix to prevent oob under speculation Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 1/9] bpf: move {prev_,}insn_idx into verifier env Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 2/9] bpf: move tmp variable into ax register in interpreter Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 3/9] bpf: enable access to ax register also from verifier rewrite Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 4/9] bpf: restrict map value pointer arithmetic for unprivileged Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 5/9] bpf: restrict stack " Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 6/9] bpf: restrict unknown scalars of mixed signed bounds " Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 7/9] bpf: fix check_map_access smin_value test when pointer contains offset Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 8/9] bpf: prevent out of bounds speculation on pointer arithmetic Daniel Borkmann
2019-01-03 21:13   ` Jann Horn
2019-01-03 23:22     ` Daniel Borkmann
2019-01-02 23:58 ` [PATCH bpf v3 9/9] bpf: add various test cases to selftests Daniel Borkmann
2019-01-03  0:08 ` [PATCH bpf v3 0/9] bpf fix to prevent oob under speculation Alexei Starovoitov
2019-01-22 14:36   ` stable backport for the BPF speculation series? [was: Re: [PATCH bpf v3 0/9] bpf fix to prevent oob under speculation] Jann Horn
2019-01-22 16:44     ` stable backport for the BPF speculation series? David Miller
2019-01-23  1:55       ` Daniel Borkmann
2019-01-23 17:04     ` stable backport for the BPF speculation series? [was: Re: [PATCH bpf v3 0/9] bpf fix to prevent oob under speculation] Greg Kroah-Hartman
2019-01-23 17:12       ` Jann Horn
2019-01-24 11:53         ` Daniel Borkmann

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