From: "Serge E. Hallyn" <serge@hallyn.com>
To: "Mahesh Bandewar (महेश बंडेवार)" <maheshb@google.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>,
Christian Brauner <christian.brauner@canonical.com>,
Boris Lukashev <blukashev@sempervictus.com>,
Daniel Micay <danielmicay@gmail.com>,
Mahesh Bandewar <mahesh@bandewar.net>,
LKML <linux-kernel@vger.kernel.org>,
Netdev <netdev@vger.kernel.org>,
Kernel-hardening <kernel-hardening@lists.openwall.com>,
Linux API <linux-api@vger.kernel.org>,
Kees Cook <keescook@chromium.org>,
"Eric W . Biederman" <ebiederm@xmission.com>,
Eric Dumazet <edumazet@google.com>,
David Miller <davem@davemloft.net>
Subject: Re: Re: [PATCH resend 2/2] userns: control capabilities of some user namespaces
Date: Thu, 9 Nov 2017 10:14:22 -0600 [thread overview]
Message-ID: <20171109161422.GA25835@mail.hallyn.com> (raw)
In-Reply-To: <CAF2d9jgs5MYn1dMT2mbhF=6UB2Hoo5kwmJhXuE6memBfWzkWXQ@mail.gmail.com>
Quoting Mahesh Bandewar (महेश बंडेवार) (maheshb@google.com):
> Of course. Let's take an example of the CVE that I have mentioned in
> my cover-letter -
> CVE-2017-7308(https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7308).
> It's well documented and even has a
> exploit(https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-7308)
> c-program that can demonstrate how it can be used against non-patched
> kernel. There is very nice blog
> post(https://googleprojectzero.blogspot.kr/2017/05/exploiting-linux-kernel-via-packet.html)
> about this vulnerability by Andrey Konovalov.
Ok, thanks. It's a good example because the fix for this CVE actually
came by itself (http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/tree/debian.master/changelog).
Normally multiple CVEs come at the same time, which would make a
workaround for one now helpful. This is a good counter-example.
I'm going to maintain that I really don't like this. But it looks
useful, so ack on the concept, I'll just have to look again at the
code now. Thanks for indulging me.
-serge
next prev parent reply other threads:[~2017-11-09 16:14 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-03 0:44 [PATCH resend 2/2] userns: control capabilities of some user namespaces Mahesh Bandewar
[not found] ` <20171103004436.40026-1-mahesh-bmGAjcP2qsnk1uMJSBkQmQ@public.gmane.org>
2017-11-04 23:53 ` Serge E. Hallyn
[not found] ` <20171104235346.GA17170-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-11-06 7:23 ` Mahesh Bandewar (महेश बंडेवार)
2017-11-06 15:03 ` Serge E. Hallyn
[not found] ` <20171106150302.GA26634-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-11-06 21:33 ` [kernel-hardening] " Daniel Micay
[not found] ` <1510003994.736.0.camel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-11-06 22:14 ` Serge E. Hallyn
2017-11-06 23:17 ` Boris Lukashev
2017-11-06 23:39 ` Serge E. Hallyn
2017-11-07 0:01 ` Boris Lukashev
[not found] ` <CAFUG7CcW077LHcQEqk7qy7iVvmi-3J8psD1Kwj45XvHThiZC6w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-07 3:28 ` [kernel-hardening] " Serge E. Hallyn
[not found] ` <20171107032802.GA6669-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-11-08 11:09 ` Mahesh Bandewar (महेश बंडेवार)
2017-11-08 19:02 ` Christian Brauner
[not found] ` <20171108190223.vdkyepcaegmub6le-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-11-09 0:55 ` Mahesh Bandewar (महेश बंडेवार)
[not found] ` <CAF2d9jjed4Q7QvCD9Kpaa7L-Ngg3XFbJvt0jNVUUwt=52wDjjw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-09 3:21 ` Serge E. Hallyn
2017-11-09 7:13 ` Mahesh Bandewar (महेश बंडेवार)
2017-11-09 7:18 ` Mahesh Bandewar (महेश बंडेवार)
2017-11-09 16:14 ` Serge E. Hallyn [this message]
[not found] ` <CAF2d9jgs5MYn1dMT2mbhF=6UB2Hoo5kwmJhXuE6memBfWzkWXQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-09 21:58 ` [kernel-hardening] " Eric W. Biederman
[not found] ` <871sl7dsh8.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-11-10 4:30 ` Mahesh Bandewar (महेश बंडेवार)
2017-11-10 4:46 ` Serge E. Hallyn
[not found] ` <20171110044645.GA3694-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-11-10 5:28 ` Mahesh Bandewar (महेश बंडेवार)
[not found] ` <20171106221418.GA32543-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-11-06 22:42 ` Christian Brauner
2017-11-07 2:16 ` Daniel Micay
[not found] ` <1510020963.736.42.camel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-11-07 3:23 ` Serge E. Hallyn
2017-11-09 18:01 ` chris hyser
[not found] ` <da764cbf-7522-06a0-6c21-adfa3eaac9c2-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2017-11-09 18:05 ` Serge E. Hallyn
2017-11-09 18:27 ` chris hyser
2017-11-09 17:25 ` Serge E. Hallyn
2017-11-10 1:49 ` Mahesh Bandewar (महेश बंडेवार)
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