netdev - Re: [PATCH net] bpf: prevent leaking pointer via xadd on unpriviledged

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

Date:   Wed, 28 Jun 2017 20:41:04 -0700
From:   Alexei Starovoitov <ast@...com>
To:     Daniel Borkmann <daniel@...earbox.net>, <davem@...emloft.net>
CC:     <kafai@...com>, <john.fastabend@...il.com>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH net] bpf: prevent leaking pointer via xadd on
 unpriviledged

On 6/28/17 6:04 PM, Daniel Borkmann wrote:
> Prevent this by checking xadd src reg for pointer types. Also
> add a couple of test cases related to this.
>
> Fixes: 1be7f75d1668 ("bpf: enable non-root eBPF programs")
> Fixes: 17a5267067f3 ("bpf: verifier (add verifier core)")
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>

Acked-by: Alexei Starovoitov <ast@...nel.org>