UbuntuUSN-5062-1Linux kernel vulnerability
6.1 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:P/I:P/A:C
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
23.7%
Releases
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Packages
- linux - Linux kernel
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-kvm - Linux kernel for cloud environments
- linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
Details
Maxim Levitsky discovered that the KVM hypervisor implementation for AMD
processors in the Linux kernel did not properly prevent a guest VM from
enabling AVIC in nested guest VMs. An attacker in a guest VM could use this
to write to portions of the host’s physical memory.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Ubuntu | 16.04 | noarch | linux-image-4.4.0-1097-kvm | < 4.4.0-1097.106 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-buildinfo-4.4.0-1093-kvm | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-cloud-tools-4.4.0-1093-kvm | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-headers-4.4.0-1093-kvm | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-image-4.4.0-1093-kvm | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-image-4.4.0-1093-kvm-dbgsym | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-kvm-cloud-tools-4.4.0-1093 | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-kvm-headers-4.4.0-1093 | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-kvm-tools-4.4.0-1093 | < 4.4.0-1093.102 | UNKNOWN |
| Ubuntu | 16.04 | noarch | linux-modules-4.4.0-1093-kvm | < 4.4.0-1093.102 | UNKNOWN |
References
Related
6.1 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:P/I:P/A:C
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
23.7%