CVE-2014-9717

Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 02 May 2016, 10:00
Last modified:06 Aug 2024, 13:55

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
6.1 MEDIUM
v3.0 (nvd)
EPSS Score
0.04% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 May 2016, 10:00
Published
Vulnerability first disclosed
06 Aug 2024, 13:55
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
  • v2.0•LOW•Score: 3.6AV:L/AC:L/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.04%• Percentile: 13%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • linux•linux_kernel

    ≤ 4.0.1

References (11)