CVE-2014-7975

Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 13 Oct 2014, 10:00
Last modified:06 Aug 2024, 13:03

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.07% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Oct 2014, 10:00
Published
Vulnerability first disclosed
06 Aug 2024, 13:03
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.07%• Percentile: 22%

Affected Systems

  • canonical•ubuntu_linux

    10.04 | 12.04 | 14.04 | 14.10

  • linux•linux_kernel

    ≤ 3.17

References (20)