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.
Published: 2014-10-13
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2014-7824 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.
Ubuntu USN Ubuntu USN USN-2415-1 Linux kernel vulnerability
Ubuntu USN Ubuntu USN USN-2416-1 Linux kernel (EC2) vulnerabilities
Ubuntu USN Ubuntu USN USN-2417-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-2418-1 Linux kernel (OMAP4) vulnerabilities
Ubuntu USN Ubuntu USN USN-2419-1 Linux kernel (Trusty HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-2420-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-2421-1 Linux kernel vulnerabilities
History

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Canonical Ubuntu Linux
Linux Linux Kernel
Redhat Enterprise Linux Rhel Extras Rt
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-06T13:03:27.690Z

Reserved: 2014-10-08T00:00:00.000Z

Link: CVE-2014-7975

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2014-10-13T10:55:09.263

Modified: 2026-05-06T22:30:45.220

Link: CVE-2014-7975

cve-icon Redhat

Severity : Low

Publid Date: 2014-10-08T00:00:00Z

Links: CVE-2014-7975 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses