[PATCH v2] xattr: Enable security.capability in user namespaces
From: jmorris@namei.org (James Morris)
Date: 2017-07-18 07:02:16
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lkml, oe-lkp
On Thu, 13 Jul 2017, Stefan Berger wrote:
A file shared by 2 containers, one mapping root to uid=1000, the other mapping root to uid=2000, will show these two xattrs on the host (init_user_ns) once these containers set xattrs on that file.
I may be missing something here, but what happens when say the uid=2000 container and associated user is deleted from the system, then another is created with the same uid? Won't this mean that you have unexpected capabilities turning up in the new container? -- James Morris [off-list ref] -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html