ALT-PU-2019-1664-1

Package update kernel-image-std-pae in branch sisyphus

Version4.19.35-alt1

Published2019-04-17

Max severityMEDIUM

Severity:

Closed issues (2)

MEDIUM5.6

Уязвимость подсистемы виртуализации Kernel-based Virtual Machine (KVM) ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2019-08-22Modified: 2024-06-18

CVSS 3.xMEDIUM 5.6

CVSS:3.x/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

CVSS 2.0MEDIUM 4.4

CVSS:2.0/AV:L/AC:M/Au:S/C:N/I:N/A:C

References

CVE-2019-3887

MEDIUM5.6

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

Published: 2019-04-09Modified: 2024-11-21

CVSS 2.0MEDIUM 4.7

CVSS:2.0/AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS 3.xMEDIUM 5.6

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

References