CVE & CISA-KEV Catalog

CVE-2014-7975

MEDIUM
5.5
CVSS v3
NVD

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.

How to fix

Remediation Available
linuxDebian
Fixed in:3.16.7-1CVE-2014-7975
Fixed in:3.16.7-1CVE-2014-7975
Fixed in:3.16.7-1CVE-2014-7975
Fixed in:3.16.7-1CVE-2014-7975
linuxUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-genericUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-generic-lpaeUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-lowlatencyUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-powerpc-e500Ubuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-powerpc-e500mcUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-powerpc-smpUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-powerpc64-embUbuntu
Fixed in:3.13.0-40.69USN-2420-1
linux-image-3.13.0-40-powerpc64-smpUbuntu
Fixed in:3.13.0-40.69USN-2420-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.46%probability of exploitation in 30 days
37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Embed a live status badge for CVE-2014-7975
CVE-2014-7975 severity badge

Markdown

[![CVE-2014-7975](https://tridentstack.com/cve/badge/CVE-2014-7975.svg)](https://tridentstack.com/cve/CVE-2014-7975)

HTML

<a href="https://tridentstack.com/cve/CVE-2014-7975"><img src="https://tridentstack.com/cve/badge/CVE-2014-7975.svg" alt="CVE-2014-7975"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.