CVE-2014-7975 | BDVDB-2026-64832 Detail
Description#
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- http://www.ubuntu.com/usn/USN-2418-1
- http://secunia.com/advisories/61145
- https://exchange.xforce.ibmcloud.com/vulnerabilities/96994
- http://www.ubuntu.com/usn/USN-2416-1
- http://www.ubuntu.com/usn/USN-2417-1
- http://www.ubuntu.com/usn/USN-2415-1
- http://www.ubuntu.com/usn/USN-2419-1
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef3a56b1c466629cd0bf482b09c7b0e5a085bb5
- http://www.securitytracker.com/id/1031180
- http://secunia.com/advisories/60174
- http://www.ubuntu.com/usn/USN-2421-1
- http://www.ubuntu.com/usn/USN-2420-1
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:1842
- http://secunia.com/advisories/62633
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.