CVE-2014-8989 in Linux Kernelinfo

Summary

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.

Reservation

11/19/2014

Disclosure

11/29/2014

Entries

VulDB provides additional information and datapoints for this CVE:

IDVulnerabilityCWEExpCouCVE
68567Linux Kernel Supplemental Group access control264UnprovenOfficial fixCVE-2014-8989

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