VulnerabilityModified

CVE-2014-8989

MEDIUM 4.6EPSS 0.50%

Does this matter?

Lower severity and a low EPSS score (0.50%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 2.0: 4.6 MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
EPSS: 0.50% probability · 41th percentile
CISA KEV: Not listed
Weakness: CWE-264
Affected: linux/linux kernel
Source: cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.