Upstream information
Description
** DISPUTED ** Kernel Samepage Merging (KSM) in the Linux kernel 2.6.32 through 4.x does not prevent use of a write-timing side channel, which allows guest OS users to defeat the ASLR protection mechanism on other guest OS instances via a Cross-VM ASL INtrospection (CAIN) attack. NOTE: the vendor states "Basically if you care about this attack vector, disable deduplication." Share-until-written approaches for memory conservation among mutually untrusting tenants are inherently detectable for information disclosure, and can be classified as potentially misunderstood behaviors rather than vulnerabilities.SUSE information
Overall state of this security issue: Ignore
This issue is currently rated as having low severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 2.1 |
| Vector | AV:L/AC:L/Au:N/C:P/I:N/A:N |
| Access Vector | Local |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
| National Vulnerability Database | |
|---|---|
| Base Score | 3.3 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| Access Vector | Local |
| Access Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | Low |
| Integrity Impact | None |
| Availability Impact | None |
| CVSSv3 Version | 3.1 |
Note from the SUSE Security Team
There is currently no code fix for this issue. A possible workaround is to disable memory de-duplication between VMs (by disabling the KSM feature in kvm). SUSE Bugzilla entry: 941252 [RESOLVED / WONTFIX] 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 |
|---|---|---|
| Carwos 1 | kernel-source-rt | Analysis |
| HPE Helion OpenStack 8 | kernel-default | Analysis |
| HPE Helion OpenStack 8 | kernel-source | Analysis |
| HPE Helion OpenStack 8 | kernel-source-azure | Analysis |
| SLES for SAP Applications | kernel-default | Ignore |
| SLES for SAP Applications | kernel-source | Ignore |
| SUSE CaaS Platform 4.0 | kernel-default | Analysis |
| SUSE CaaS Platform 4.0 | kernel-source | Analysis |
| SUSE CaaS Platform 4.0 | kernel-source-azure | Analysis |
| SUSE Enterprise Storage 5 | kernel-default | Analysis |
| SUSE Enterprise Storage 5 | kernel-source | Analysis |
| SUSE Enterprise Storage 5 | kernel-source-azure | Analysis |
| SUSE Enterprise Storage 6 | kernel-default | Analysis |
| SUSE Enterprise Storage 6 | kernel-source | Analysis |
| SUSE Enterprise Storage 6 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Desktop 11 SP3 | kernel-default | Ignore |
| SUSE Linux Enterprise Desktop 11 SP3 | kernel-source | Ignore |
| SUSE Linux Enterprise Desktop 11 SP4 | kernel-default | Ignore |
| SUSE Linux Enterprise Desktop 11 SP4 | kernel-source | Ignore |
| SUSE Linux Enterprise Desktop 12 SP3 | kernel-default | Ignore |
| SUSE Linux Enterprise Desktop 12 SP3 | kernel-source | Ignore |
| SUSE Linux Enterprise Desktop 12 SP4 | kernel-default | Ignore |
| SUSE Linux Enterprise Desktop 12 SP4 | kernel-source | Ignore |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | kernel-default | Ignore |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | kernel-source | Ignore |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | kernel-default | Ignore |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | kernel-source | Ignore |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise High Performance Computing 15 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS | kernel-default | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS | kernel-source | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Module for Basesystem 15 | kernel-default | Ignore |
| SUSE Linux Enterprise Module for Basesystem 15 | kernel-source | Ignore |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | kernel-default | Ignore |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | kernel-source | Ignore |
| 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 | Ignore |
| SUSE Linux Enterprise Module for Development Tools 15 | kernel-source | Ignore |
| SUSE Linux Enterprise Module for Development Tools 15 SP1 | kernel-default | Ignore |
| SUSE Linux Enterprise Module for Development Tools 15 SP1 | kernel-source | Ignore |
| 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 Module for Public Cloud 15 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Module for Public Cloud 15 SP1 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Module for Public Cloud 15 SP2 | kernel-source-azure | 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 | kernel-default | Analysis |
| SUSE Linux Enterprise Point of Service Image Server 12 | kernel-source | Analysis |
| SUSE Linux Enterprise Real Time 12 SP4 | kernel-source-rt | Analysis |
| SUSE Linux Enterprise Real Time 12 SP5 | kernel-source-rt | Analysis |
| SUSE Linux Enterprise Server 11 SP3 | kernel-default | Ignore |
| SUSE Linux Enterprise Server 11 SP3 | kernel-source | Ignore |
| SUSE Linux Enterprise Server 11 SP3 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise Server 11 SP3 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 11 SP3 for VMware | kernel-default | Ignore |
| SUSE Linux Enterprise Server 11 SP3 for VMware | kernel-source | Ignore |
| SUSE Linux Enterprise Server 11 SP4 | kernel-default | Ignore |
| SUSE Linux Enterprise Server 11 SP4 | kernel-source | Ignore |
| SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP1 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP1 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP2 | kernel-default | Analysis |
| SUSE Linux Enterprise Server 12 SP2 | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 SP2 BCL | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP2 BCL | kernel-source | Ignore |
| 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 | Ignore |
| SUSE Linux Enterprise Server 12 SP2 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP2 LTSS ERICSSON | kernel-default | Analysis |
| SUSE Linux Enterprise Server 12 SP2 LTSS ERICSSON | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 SP2 LTSS SAP | kernel-default | Analysis |
| SUSE Linux Enterprise Server 12 SP2 LTSS SAP | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 SP3 | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP3 | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP3 BCL | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP3 BCL | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP3 BCL | kernel-source-azure | 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 ESPOS | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server 12 SP3 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP3 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP3 LTSS | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server 12 SP4 | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP4 | kernel-source | Ignore |
| 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 ESPOS | kernel-source-azure | 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 SP4 LTSS | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server 12 SP5 | kernel-default | Ignore |
| SUSE Linux Enterprise Server 12 SP5 | kernel-source | Ignore |
| SUSE Linux Enterprise Server 12 SP5 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server 15 LTSS | kernel-default | Ignore |
| SUSE Linux Enterprise Server 15 LTSS | kernel-source | Ignore |
| SUSE Linux Enterprise Server 15 SP1 Business Critical Linux | kernel-default | Analysis |
| SUSE Linux Enterprise Server 15 SP1 Business Critical Linux | kernel-source | Analysis |
| SUSE Linux Enterprise Server 15 SP1 Business Critical Linux | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server 15 SP1 LTSS | kernel-default | Analysis |
| SUSE Linux Enterprise Server 15 SP1 LTSS | kernel-source | Analysis |
| SUSE Linux Enterprise Server 15 SP1 LTSS | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server ESPOS 15 | kernel-default | Ignore |
| SUSE Linux Enterprise Server ESPOS 15 | kernel-source | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 | kernel-default | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 | kernel-source | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | kernel-default | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | kernel-source | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | kernel-default | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | kernel-source | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-default | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-source | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-default | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-source | Ignore |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-source-azure | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 | kernel-default | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 | kernel-source | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | kernel-default | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | kernel-source | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | kernel-source-azure | Analysis |
| SUSE Manager Proxy 4.0 | kernel-default | Analysis |
| SUSE Manager Proxy 4.0 | kernel-source | Analysis |
| SUSE Manager Proxy 4.0 | kernel-source-azure | Analysis |
| SUSE Manager Retail Branch Server 4.0 | kernel-default | Analysis |
| SUSE Manager Retail Branch Server 4.0 | kernel-source | Analysis |
| SUSE Manager Retail Branch Server 4.0 | kernel-source-azure | Analysis |
| SUSE Manager Server 4.0 | kernel-default | Analysis |
| SUSE Manager Server 4.0 | kernel-source | Analysis |
| SUSE Manager Server 4.0 | kernel-source-azure | 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 8 | kernel-source-azure | Analysis |
| SUSE OpenStack Cloud 9 | kernel-default | Analysis |
| SUSE OpenStack Cloud 9 | kernel-source | Analysis |
| SUSE OpenStack Cloud 9 | kernel-source-azure | Analysis |
| SUSE OpenStack Cloud Crowbar 8 | kernel-default | Analysis |
| SUSE OpenStack Cloud Crowbar 8 | kernel-source | Analysis |
| SUSE OpenStack Cloud Crowbar 8 | kernel-source-azure | Analysis |
| SUSE OpenStack Cloud Crowbar 9 | kernel-default | Analysis |
| SUSE OpenStack Cloud Crowbar 9 | kernel-source | Analysis |
| SUSE OpenStack Cloud Crowbar 9 | kernel-source-azure | Analysis |
| SUSE Real Time Module | kernel-source-rt | Analysis |
