Date: Tue, 08 Jul 2008 19:20:46 +0800 From: Eugene Teo <eteo@...hat.com> To: oss-security@...ts.openwall.com Subject: CVE-2008-2931 kernel: missing check before setting mount propagation The do_change_type routine in the Linux kernel has a missing check for capable(CAP_SYS_ADMIN). Even though the mount command restricts the changing of mountpoint type to only root users, it is possible for local unprivileged users to bypass and abuse this problem. More details can be found at: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2008-2931 This affects kernel versions from 2.6.15-rc1 up to 2.6.22-rc1. The proposed upstream commit is: ee6f958291e2a768fd727e7a67badfff0b67711a. I have allocated this CVE-2008-2931. Thanks, Eugene -- Eugene Teo / Red Hat Security Response Team
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