| Revision Date: | 2014-10-13 | Version: | 1 | | Title: | CVE-2014-7975 on Ubuntu 14.04 LTS (trusty) - medium. | | 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. Andy Lutomirski discovered that the Linux kernel was not checking the CAP_SYS_ADMIN when remounting filesystems to read-only. A local user could exploit this flaw to cause a denial of service (loss of writability).
| | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2014-7975
| | Platform(s): | Ubuntu 14.04 LTS
| Product(s): | | | Definition Synopsis | | Ubuntu 14.04 LTS (trusty) is installed. AND Package Information
The 'linux' package in trusty was vulnerable but has been fixed (note: '3.13.0-40.69').
OR NOT While related to the CVE in some way, the 'linux-aws' package in trusty is not affected (note: '4.4.0-1002.2').
OR While related to the CVE in some way, a decision has been made to ignore it.
OR While related to the CVE in some way, a decision has been made to ignore it.
OR While related to the CVE in some way, a decision has been made to ignore it.
OR NOT While related to the CVE in some way, the 'linux-lts-utopic' package in trusty is not affected (note: '3.16.0-25.33~14.04.2').
OR NOT While related to the CVE in some way, the 'linux-lts-vivid' package in trusty is not affected (note: '3.19.0-18.18~14.04.1').
OR NOT While related to the CVE in some way, the 'linux-lts-wily' package in trusty is not affected (note: '4.2.0-18.22~14.04.1').
OR NOT While related to the CVE in some way, the 'linux-lts-xenial' package in trusty is not affected (note: '4.4.0-13.29~14.04.1').
OR While related to the CVE in some way, a decision has been made to ignore it.
OR While related to the CVE in some way, a decision has been made to ignore it.
OR While related to the CVE in some way, a decision has been made to ignore it.
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