Upstream information
Description
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having important severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 7.2 |
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| Access Vector | Local |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
| National Vulnerability Database | SUSE | |
|---|---|---|
| Base Score | 7.8 | 7.8 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-source | Already fixed |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | kernel-source | Already fixed |
| SUSE CaaS Platform Toolchain 3 | kernel-source | Already fixed |
| SUSE Linux Enterprise Desktop 11 SP4 | kernel-source | Already fixed |
| SUSE Linux Enterprise Desktop 12 SP3 | kernel-default | Already fixed |
| SUSE Linux Enterprise Desktop 12 SP3 | kernel-source | Already fixed |
| SUSE Linux Enterprise Desktop 15 | kernel-default | Already fixed |
| SUSE Linux Enterprise Desktop 15 | kernel-source | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15 | kernel-default | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15 | kernel-source | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | kernel-source | Already fixed |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | kernel-source | Already fixed |
| SUSE Linux Enterprise Module for Basesystem 15 | kernel-default | Already fixed |
| SUSE Linux Enterprise Module for Basesystem 15 | kernel-source | Already fixed |
| SUSE Linux Enterprise Module for Development Tools 15 | kernel-default | Already fixed |
| SUSE Linux Enterprise Module for Development Tools 15 | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 11 SP4 | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 11 SP4-LTSS | kernel-default | Already fixed |
| SUSE Linux Enterprise Server 11 SP4-LTSS | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 12 SP3 | kernel-default | Already fixed |
| SUSE Linux Enterprise Server 12 SP3 | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 12 SP3-BCL | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 12 SP3-LTSS | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 15 | kernel-default | Already fixed |
| SUSE Linux Enterprise Server 15 | kernel-source | Already fixed |
| SUSE Linux Enterprise Server 15-LTSS | kernel-source | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | kernel-source | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 | kernel-default | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 | kernel-source | Already fixed |
| SUSE OpenStack Cloud 8 | kernel-source | Already fixed |
| SUSE OpenStack Cloud Crowbar 8 | kernel-source | Already fixed |
SUSE Timeline for this CVE
CVE page created: Tue Jul 24 17:45:10 2018CVE page last modified: Thu Jul 25 17:10:00 2024