Upstream information

CVE-2011-4080 at MITRE

Description

The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4
Vector AV:L/AC:H/Au:N/C:C/I:N/A:N
Access Vector Local
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact None
Availability Impact None

Note from the SUSE Security Team

This issue affects a hardening measure introduced in the 2.6.37 Linux kernel. It does not affect older kernels and so products like SUSE Linux Enterprise 11 SP1 or earlier releases are not affected by this problem.

SUSE Bugzilla entry: 726772 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
HPE Helion OpenStack 8 kernel-default Analysis
HPE Helion OpenStack 8 kernel-source Analysis
SLES for SAP Applications kernel-default Analysis
SLES for SAP Applications kernel-source Analysis
SUSE Enterprise Storage 5 kernel-default Analysis
SUSE Enterprise Storage 5 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP3 kernel-default Analysis
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP4 kernel-default Analysis
SUSE Linux Enterprise Desktop 12 SP4 kernel-source Analysis
SUSE Linux Enterprise High Performance Computing 12 SP4 kernel-default Analysis
SUSE Linux Enterprise High Performance Computing 12 SP4 kernel-source Analysis
SUSE Linux Enterprise High Performance Computing 12 SP5 kernel-default Analysis
SUSE Linux Enterprise High Performance Computing 12 SP5 kernel-source Analysis
SUSE Linux Enterprise High Performance Computing 15 LTSS kernel-default Analysis
SUSE Linux Enterprise High Performance Computing 15 LTSS kernel-source Analysis
SUSE Linux Enterprise Module for Basesystem 15 kernel-default Analysis
SUSE Linux Enterprise Module for Basesystem 15 kernel-source Analysis
SUSE Linux Enterprise Module for Basesystem 15 SP1 kernel-default Analysis
SUSE Linux Enterprise Module for Basesystem 15 SP1 kernel-source Analysis
SUSE Linux Enterprise Module for Basesystem 15 SP2 kernel-default Analysis
SUSE Linux Enterprise Module for Basesystem 15 SP2 kernel-source Analysis
SUSE Linux Enterprise Module for Development Tools 15 kernel-default Analysis
SUSE Linux Enterprise Module for Development Tools 15 kernel-source Analysis
SUSE Linux Enterprise Module for Development Tools 15 SP1 kernel-default Analysis
SUSE Linux Enterprise Module for Development Tools 15 SP1 kernel-source Analysis
SUSE Linux Enterprise Module for Development Tools 15 SP2 kernel-default Analysis
SUSE Linux Enterprise Module for Development Tools 15 SP2 kernel-source Analysis
SUSE Linux Enterprise Point of Service 11 SP3 kernel-default Analysis
SUSE Linux Enterprise Point of Service 11 SP3 kernel-source Analysis
SUSE Linux Enterprise Point of Service Image Server 12 SP2 kernel-default Analysis
SUSE Linux Enterprise Point of Service Image Server 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Server 11 SP3 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 11 SP3 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 11 SP4 kernel-default Analysis
SUSE Linux Enterprise Server 11 SP4 kernel-source Analysis
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 12 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP1 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP1 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP2 ESPOS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP2 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP2 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP2 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP3 kernel-default Analysis
SUSE Linux Enterprise Server 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Server 12 SP3 ESPOS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP3 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP3 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP3 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP4 kernel-default Analysis
SUSE Linux Enterprise Server 12 SP4 kernel-source Analysis
SUSE Linux Enterprise Server 12 SP4 ESPOS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP4 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP4 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 12 SP4 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP5 kernel-default Analysis
SUSE Linux Enterprise Server 12 SP5 kernel-source Analysis
SUSE Linux Enterprise Server 15 ESPOS kernel-default Analysis
SUSE Linux Enterprise Server 15 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 15 LTSS kernel-default Analysis
SUSE Linux Enterprise Server 15 LTSS kernel-source Analysis
SUSE Linux Enterprise Server BCL 12 SP2 kernel-default Analysis
SUSE Linux Enterprise Server BCL 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Server BCL 12 SP3 kernel-default Analysis
SUSE Linux Enterprise Server BCL 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 kernel-default Analysis
SUSE Linux Enterprise Server for SAP Applications 12 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-default Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kernel-default Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kernel-default Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kernel-default Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 15 kernel-default Analysis
SUSE Linux Enterprise Server for SAP Applications 15 kernel-source Analysis
SUSE OpenStack Cloud 7 kernel-default Analysis
SUSE OpenStack Cloud 7 kernel-source Analysis
SUSE OpenStack Cloud 8 kernel-default Analysis
SUSE OpenStack Cloud 8 kernel-source Analysis
SUSE OpenStack Cloud 9 kernel-default Analysis
SUSE OpenStack Cloud 9 kernel-source Analysis
SUSE OpenStack Cloud Crowbar 8 kernel-default Analysis
SUSE OpenStack Cloud Crowbar 8 kernel-source Analysis
SUSE OpenStack Cloud Crowbar 9 kernel-default Analysis
SUSE OpenStack Cloud Crowbar 9 kernel-source Analysis