UBUNTU-CVE-2014-9717

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2014-9717
Published: 02 May 2016, 10:59
Last modified:16 Jul 2025, 07:17

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6.1 MEDIUM
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 May 2016, 10:59
Published
Vulnerability first disclosed
16 Jul 2025, 07:17
Last Modified
Vulnerability information updated

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 Metrics

  • v3.0•MEDIUM•Score: 6.1CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Affected Systems

  • ubuntu•linux

    < 4.2.0-16.19

  • ubuntu•linux-aws

    < 4.4.0-1002.2 | < 4.4.0-1001.10

  • ubuntu•linux-gke

    < 4.4.0-1003.3

  • ubuntu•linux-hwe

    < 4.8.0-36.36~16.04.1

  • ubuntu•linux-lts-wily

    < 4.2.0-18.22~14.04.1

  • ubuntu•linux-lts-xenial

    < 4.4.0-13.29~14.04.1

  • ubuntu•linux-raspi2

    < 4.2.0-1013.19

  • ubuntu•linux-snapdragon

    < 4.4.0-1012.12

References (4)