What is CVE-2014-8989?

CVE-2014-8989 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.6 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2014-8989 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2014-8989?

CVE-2014-8989 has a CVSS score of 4.6 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:P/I:P/A:P.

Is there a patch available for CVE-2014-8989?

No patch is currently available for CVE-2014-8989. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2014-8989 actively exploited?

CVE-2014-8989 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/264.html

CVE-2014-8989

Medium

The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other category, aka a "negative groups" issue, related to kernel/groups.c, kernel/uid16.c, and kernel/user_namespace.c.

Package Linux Kernel

Published 2014-11-30

Last modified 2026-05-06

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.6

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

AV:L/AC:L/Au:N/C:P/I:P/A:P

Weakness type

CWE-264

CVE-2014-8989 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2014-8989 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html
Lists
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html
Thread
http://thread.gmane.org/gmane.linux.man/7385/

Exploit
Mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
Openwall
http://www.openwall.com/lists/oss-security/2014/11/20/4
Securityfocus
http://www.securityfocus.com/bid/71154
Ubuntu Security
http://www.ubuntu.com/usn/USN-2515-1
Ubuntu Security
http://www.ubuntu.com/usn/USN-2516-1
Ubuntu Security
http://www.ubuntu.com/usn/USN-2517-1
Ubuntu Security
http://www.ubuntu.com/usn/USN-2518-1

Details

CVE ID CVE-2014-8989

Severity Medium

CVSS score 4.6 / 10

CVSS version 2.0

Published 2014-11-30

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2014-8989?

CVE-2014-8989 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.6 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2014-8989 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2014-8989?

CVE-2014-8989 has a CVSS score of 4.6 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:P/I:P/A:P.
Is there a patch available for CVE-2014-8989?

No patch is currently available for CVE-2014-8989. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2014-8989 actively exploited?

No — CVE-2014-8989 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. View CWE-264 on MITRE CWE →