CVE-2014-7975

Kernel: fs: umount denial of service

Published Oct 13, 2014 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

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

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 6, 2024, 1:03 PM
Reserved
Oct 8, 2014, 12:00 AM
Status
Modified
Published
Oct 13, 2014, 10:55 AM
Modified
Jun 17, 2026, 12:16 AM
Severity
Low
Public date
Oct 8, 2014, 12:00 AM