Upstream information
Description
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of a bad error path in GNTTABOP_map_grant. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1 instead of a negative value. The grant table code in Linux treats this condition as success, and proceeds with incorrectly initialised state. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to map a grant, it hits the incorrect error path. This will crash a Linux based dom0 or backend domain.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 2.1 |
| Vector | AV:L/AC:L/Au:N/C:N/I:N/A:P |
| Access Vector | Local |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
| National Vulnerability Database | |
|---|---|
| Base Score | 5.5 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Access Vector | Local |
| Access Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
- SUSE-SU-2020:1124-1, published Tue Apr 28 04:19:52 MDT 2020
- SUSE-SU-2020:1138-1, published Wed Apr 29 10:28:02 MDT 2020
- SUSE-SU-2020:1139-1, published Wed Apr 29 11:04:22 MDT 2020
- SUSE-SU-2020:1634-1, published Wed Jun 17 07:12:54 MDT 2020
- openSUSE-SU-2020:0599-1, published Sat, 2 May 2020 00:40:00 +0200 (CEST)
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| Image SLES15-EC2-CHOST-HVM-BYOS |
| |
| Image SLES15-SP1-CHOST-BYOS-EC2 |
| |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS SUSE Linux Enterprise High Performance Computing 15-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-2020-1634 |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-1124 |
| SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1 |
| Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-1124 |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP1-2020-1124 |
| SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4 |
| Patchnames: SUSE-SLE-SERVER-12-SP4-2020-1138 |
| SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP5 |
| Patchnames: SUSE-SLE-SERVER-12-SP5-2020-1139 |
| SUSE Linux Enterprise Server 15-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-2020-1634 |
| SUSE Linux Enterprise Server for SAP Applications 15 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-2020-1634 |
| SUSE Linux Enterprise Software Development Kit 12 SP4 |
| Patchnames: SUSE-SLE-SDK-12-SP4-2020-1138 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 |
| Patchnames: SUSE-SLE-SDK-12-SP5-2020-1139 |
| openSUSE Leap 15.1 |
| Patchnames: openSUSE-2020-599 |
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 |
|---|---|---|
| SUSE CaaS Platform 3.0 | xen | Not affected |
| SUSE Container as a Service Platform 1.0 | xen | Affected |
| SUSE Container as a Service Platform 2.0 | xen | Not affected |
| SUSE Linux Enterprise 15-SP1 Module for Basesystem | xen | Released |
| SUSE Linux Enterprise 15-SP1 Module for Server Applications | xen | Released |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | xen | Released |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | xen | Released |
| SUSE Linux Enterprise High Performance Computing 15 LTSS | xen | Released |
| SUSE Linux Enterprise Server 11 SP1 | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server 11 SP4 LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP1 LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP2 BCL | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP2 LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP3 BCL | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP3 LTSS | xen | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | xen | Released |
| SUSE Linux Enterprise Server 12 SP5 | xen | Released |
| SUSE Linux Enterprise Server ESPOS 15 | xen | Released |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | Released |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Released |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | xen | Released |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | Released |
