CVE-2014-8989

2014-11-30T01:59:00
ID CVE-2014-8989
Type cve
Reporter cve@mitre.org
Modified 2017-01-03T02:59:00

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.