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ubuntucveUbuntu.comUB:CVE-2022-2196
HistoryJan 09, 2023 - 12:00 a.m.

CVE-2022-2196

2023-01-0900:00:00
ubuntu.com
ubuntu.com
38
linux kernel
kvm
nvmx
speculative execution
spectre v2
l0 advertising
eibrs support
upgrade
commit 2e7eab81425a

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

0.0004 Low

EPSS

Percentile

9.8%

JSON

A regression exists in the Linux Kernel within KVM: nVMX that allowed for
speculative execution attacks. L2 can carry out Spectre v2 attacks on L1
due to L1 thinking it doesn’t need retpolines or IBPB after running L2 due
to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code
execution can execute code on an indirect branch on the host machine. We
recommend upgrading to Kernel 6.2 or past commit 2e7eab81425a

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux< 5.4.0-146.163UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-69.76UNKNOWN
ubuntu22.10noarchlinux< 5.19.0-38.39UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1099.107UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1033.37UNKNOWN
ubuntu22.10noarchlinux-aws< 5.19.0-1022.23UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1033.37~20.04.1UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1099.107~18.04.1UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1105.111UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1035.42UNKNOWN
Rows per page:
1-10 of 601

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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

0.0004 Low

EPSS

Percentile

9.8%

JSON
Related for UB:CVE-2022-2196
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