CVE-2014-9717
fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a…
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
Description
fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user namespace.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
- http://www.openwall.com/lists/oss-security/2015/04/17/4
- http://www.securityfocus.com/bid/74226
- http://www.spinics.net/lists/linux-containers/msg30786.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1226751
- https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1Vendor Advisory
- https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
- http://www.openwall.com/lists/oss-security/2015/04/17/4
- http://www.securityfocus.com/bid/74226
- http://www.spinics.net/lists/linux-containers/msg30786.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1226751
- https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1Vendor Advisory
- https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.