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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.
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https://access.redhat.com/errata/RHSA-2017:1842 [No Types Assigned]
https://access.redhat.com/errata/RHSA-2017:2077 [No Types Assigned]
https://exchange.xforce.ibmcloud.com/vulnerabilities/96994 [No Types Assigned]
http://xforce.iss.net/xforce/xfdb/96994 [No Types Assigned]
http://www.securitytracker.com/id/1031180 [No Types Assigned]