Description
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.
Published: 2014-11-30
Score: 4.6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
EUVD EUVD EUVD-2014-8816 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.
Ubuntu USN Ubuntu USN USN-2515-1 Linux kernel (Trusty HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-2516-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-2517-1 Linux kernel (Utopic HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-2518-1 Linux kernel vulnerabilities
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Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-06T13:33:12.646Z

Reserved: 2014-11-19T00:00:00.000Z

Link: CVE-2014-8989

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2014-11-30T01:59:07.570

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

Link: CVE-2014-8989

cve-icon Redhat

Severity : Moderate

Publid Date: 2014-11-15T00:00:00Z

Links: CVE-2014-8989 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses