| 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
| ||
|
Date: Wed, 24 Jul 2013 15:30:18 +0000 From: "Serge E. Hallyn" <serge@...lyn.com> To: "Serge E. Hallyn" <serge@...lyn.com> Cc: "Eric W. Biederman" <ebiederm@...ssion.com>, Andy Lutomirski <luto@...capital.net>, Linux Containers <containers@...ts.linux-foundation.org>, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org Subject: Re: [REVIEW][PATCH] vfs: Lock in place mounts from more privileged users Quoting Serge E. Hallyn (serge@...lyn.com): > Quoting Eric W. Biederman (ebiederm@...ssion.com): > > > > Serge does this patch break lxc? I think all should be well but I want > > to make certain there is not some hidden case where this fundamentaly > > breaks some functionality. > > I haven't yet tried. I'll build and test a kernel today. I'm pretty > sure all the child's mounts are done after clone, so I *think* the worst > case will be that the unmounting of put_old after pivot_root() will > be noisy. Will let you know. > > -serge Just tested it - works fine. Warns about all of the failed umounts. Acked-by: Serge Hallyn <serge.hallyn@...onical.com> ( Mind you I'm not approving of the idea of hiding mounts as a security mechanisms, but I know that neither are you :) thanks, -serge -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists