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.
References
Configurations
Configuration 1 (hide)
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History
No history.
Information
Published : 2014-11-30 01:59
Updated : 2017-01-03 02:59
NVD link : CVE-2014-8989
Mitre link : CVE-2014-8989
CVE.ORG link : CVE-2014-8989
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-264
Permissions, Privileges, and Access Controls