It was found that stacking a file system over procfs in the Linux kernel could lead to a kernel stack overflow due to deep nesting, as demonstrated by mounting ecryptfs over procfs and creating a recursion by mapping /proc/environ. An unprivileged, local user could potentially use this flaw to escalate their privileges on the system.
Find out more about CVE-2016-1583 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6 and may addressed in a future update.
Base Score | 6.9 |
---|---|
Base Metrics | AV:L/AC:M/Au:N/C:C/I:C/A:C |
Access Vector | Local |
Access Complexity | Medium |
Authentication | None |
Confidentiality Impact | Complete |
Integrity Impact | Complete |
Availability Impact | Complete |
CVSS3 Base Score | 8.1 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
Attack Vector | Local |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Changed |
Confidentiality | High |
Integrity Impact | High |
Availability Impact | High |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Errata | Release Date |
---|---|---|
Red Hat Enterprise Linux 5 (kernel) | RHSA-2016:2124 | 2016-10-28 |
Red Hat Enterprise Linux 6 (kernel) | RHSA-2016:2766 | 2016-11-15 |
Red Hat Enterprise Linux Extended Update Support 6.7 (kernel) | RHSA-2017:2760 | 2017-09-19 |
Platform | Package | State |
---|---|---|
Red Hat Enterprise MRG 2 | realtime-kernel | Affected |
Red Hat Enterprise Linux 7 | kernel-rt | Affected |
Red Hat Enterprise Linux 7 | kernel | Not affected |