netdev - Re: [PATCH bpf 0/3] bpf: improve verifier resilience

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <9cc31112-5f70-cae4-2e85-5446650c915e@iogearbox.net>
Date:   Tue, 4 Dec 2018 17:23:50 +0100
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Alexei Starovoitov <ast@...nel.org>,
        "David S . Miller" <davem@...emloft.net>
Cc:     ecree@...arflare.com, anatoly.trosinenko@...il.com,
        netdev@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH bpf 0/3] bpf: improve verifier resilience

On 12/04/2018 07:46 AM, Alexei Starovoitov wrote:
> Three patches to improve verifier ability to handle pathological bpf programs
> with a lot of branches:
> - make sure prog_load syscall can be aborted
> - improve branch taken analysis
> - introduce per-insn complexity limit for unprivileged programs
> 
> Alexei Starovoitov (3):
>   bpf: check pending signals while verifying programs
>   bpf: improve verifier branch analysis
>   bpf: add per-insn complexity limit
> 
>  kernel/bpf/verifier.c                       | 103 +++++++++++++++++---
>  tools/testing/selftests/bpf/test_verifier.c |   4 +-
>  2 files changed, 91 insertions(+), 16 deletions(-)
> 

Applied to bpf, thanks!