Upstream information
Description
An issue was discovered in Xen 4.14.x. When moving IRQs between CPUs to distribute the load of IRQ handling, IRQ vectors are dynamically allocated and de-allocated on the relevant CPUs. De-allocation has to happen when certain constraints are met. If these conditions are not met when first checked, the checking CPU may send an interrupt to itself, in the expectation that this IRQ will be delivered only after the condition preventing the cleanup has cleared. For two specific IRQ vectors, this expectation was violated, resulting in a continuous stream of self-interrupts, which renders the CPU effectively unusable. A domain with a passed through PCI device can cause lockup of a physical CPU, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are vulnerable. Arm systems are not vulnerable. Only guests with physical PCI devices passed through to them can exploit the vulnerability.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
National Vulnerability Database | |
---|---|
Base Score | 4.9 |
Vector | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Access Vector | Local |
Access Complexity | Low |
Authentication | None |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | Complete |
National Vulnerability Database | SUSE | |
---|---|---|
Base Score | 6.2 | 6.5 |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
Access Vector | Local | Local |
Access Complexity | Low | Low |
Privileges Required | None | Low |
User Interaction | None | None |
Scope | Unchanged | Changed |
Confidentiality Impact | None | None |
Integrity Impact | None | None |
Availability Impact | High | High |
CVSSv3 Version | 3.1 | 3.1 |
List of released packages
Product(s) | Fixed package version(s) | References |
---|---|---|
SUSE Linux Enterprise Desktop 15 SP3 SUSE Linux Enterprise Module for Basesystem 15 SP3 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP3 GA xen-libs-4.14.1_16-1.6 |
SUSE Linux Enterprise Desktop 15 SP4 SUSE Linux Enterprise Module for Basesystem 15 SP4 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP4 GA xen-libs-4.16.0_08-150400.2.12 |
SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP3 SUSE Linux Enterprise Storage 7.1 SUSE Manager Proxy 4.2 SUSE Manager Retail Branch Server 4.2 SUSE Manager Server 4.2 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP3 GA xen-libs-4.14.1_16-1.6 SUSE Linux Enterprise Module for Server Applications 15 SP3 GA xen-4.14.1_16-1.6 |
SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Manager Proxy 4.3 SUSE Manager Retail Branch Server 4.3 SUSE Manager Server 4.3 |
| Patchnames: SUSE Linux Enterprise Module for Basesystem 15 SP4 GA xen-libs-4.16.0_08-150400.2.12 SUSE Linux Enterprise Module for Server Applications 15 SP4 GA xen-4.16.0_08-150400.2.12 |
SUSE Linux Enterprise Module for Server Applications 15 SP3 |
| Patchnames: SUSE Linux Enterprise Module for Server Applications 15 SP3 GA xen-4.14.1_16-1.6 |
SUSE Linux Enterprise Module for Server Applications 15 SP4 |
| Patchnames: SUSE Linux Enterprise Module for Server Applications 15 SP4 GA xen-4.16.0_08-150400.2.12 |
openSUSE Leap 15.3 |
| Patchnames: openSUSE Leap 15.3 GA xen-libs-4.14.1_16-1.6 |
openSUSE Leap 15.4 |
| Patchnames: openSUSE Leap 15.4 GA xen-libs-4.16.0_08-150400.2.12 |
openSUSE Tumbleweed |
| Patchnames: openSUSE Tumbleweed GA xen-4.15.1_01-1.2 |
First public cloud image revisions this CVE is fixed in:
- alibaba/sles-15-sp3-chost-byos-v20210729
- alibaba/sles-15-sp3-chost-byos-v20210827
- amazon/suse-manager-4-2-proxy-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-manager-4-2-server-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-chost-byos-v20210729-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-chost-byos-v20210827-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-v20210924-ecs-hvm-ssd-x86_64
- amazon/suse-sles-15-sp3-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-hpc-15-sp3-byos-v20210924-hvm-ssd-x86_64
- amazon/suse-sles-sap-15-sp3-byos-v20210924-hvm-ssd-x86_64
- google/sles-15-sp3-byos-v20210812
- google/sles-15-sp3-chost-byos-v20210729
- google/sles-15-sp3-chost-byos-v20210827
- google/sles-15-sp3-sap-byos-v20210812
- google/sles-15-sp3-sap-v20210812
- google/sles-15-sp3-sapcal-v20210812
- google/sles-15-sp3-v20210812
- google/suse-manager-4-2-proxy-byos-v20210812
- google/suse-manager-4-2-server-byos-v20210812
- microsoft/suse-manager-4-2-proxy-byos-v20210924
- microsoft/suse-manager-4-2-server-byos-v20210924
- microsoft/suse-sles-15-sp3-basic-v20210924
- microsoft/suse-sles-15-sp3-byos-v20210924
- microsoft/suse-sles-15-sp3-chost-byos-v20210729
- microsoft/suse-sles-15-sp3-chost-byos-v20210827
- microsoft/suse-sles-15-sp3-hpc-byos-v20210924
- microsoft/suse-sles-15-sp3-hpc-v20210924
- microsoft/suse-sles-15-sp3-sapcal-v20220120
- microsoft/suse-sles-15-sp3-v20210924
- microsoft/suse-sles-sap-15-sp3-byos-v20210924
- microsoft/suse-sles-sap-15-sp3-v20210924
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 | xen | Not affected |
SUSE Enterprise Storage 5 | xen | Unsupported |
SUSE Linux Enterprise Desktop 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise Desktop 15 SP2 | xen | Not affected |
SUSE Linux Enterprise High Performance Computing 12 SP5 | xen | Not affected |
SUSE Linux Enterprise High Performance Computing 15 LTSS | xen | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise High Performance Computing 15 SP2 | xen | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | xen | Not affected |
SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise Module for Server Applications 15 SP2 | xen | Not affected |
SUSE Linux Enterprise Point of Service 11 SP3 | xen | Not affected |
SUSE Linux Enterprise Point of Service Image Server 12 SP2 | xen | Unsupported |
SUSE Linux Enterprise Server 11 SP4 LTSS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP2 BCL | xen | Not affected |
SUSE Linux Enterprise Server 12 SP2 ESPOS | xen | Unsupported |
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 ESPOS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP3 LTSS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP4 ESPOS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP4 LTSS | xen | Not affected |
SUSE Linux Enterprise Server 12 SP5 | xen | Not affected |
SUSE Linux Enterprise Server 15 ESPOS | xen | Not affected |
SUSE Linux Enterprise Server 15 LTSS | xen | Not affected |
SUSE Linux Enterprise Server 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise Server 15 SP2 | xen | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | Unsupported |
SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 | xen | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | Unsupported |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | Not affected |
SUSE Linux Enterprise Storage 6 | xen | Unsupported |
SUSE Linux Enterprise Storage 7 | xen | Not affected |
SUSE Manager Proxy 4.0 | xen | Unsupported |
SUSE Manager Proxy 4.1 | xen | Not affected |
SUSE Manager Retail Branch Server 4.0 | xen | Unsupported |
SUSE Manager Retail Branch Server 4.1 | xen | Not affected |
SUSE Manager Server 4.0 | xen | Unsupported |
SUSE Manager Server 4.1 | xen | Not affected |
SUSE OpenStack Cloud 7 | xen | Not affected |
SUSE OpenStack Cloud 8 | xen | Not affected |
SUSE OpenStack Cloud 9 | xen | Not affected |
SUSE OpenStack Cloud Crowbar 8 | xen | Not affected |
SUSE OpenStack Cloud Crowbar 9 | xen | Not affected |