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ubuntucveUbuntu.comUB:CVE-2023-5090
HistoryNov 06, 2023 - 12:00 a.m.

CVE-2023-5090

2023-11-0600:00:00
ubuntu.com
ubuntu.com
35
kvm security flaw
x2apic msrs
denial of service

CVSS3

6

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.2

Confidence

High

EPSS

0

Percentile

5.1%

A flaw was found in KVM. An improper check in
svm_set_x2apic_msr_interception() may allow direct access to host x2apic
msrs when the guest resets its apic, potentially leading to a denial of
service condition.

Bugs

Notes

Author Note
Priority reason: Local guest OS can affect the integrity of host x2APIC, potentially leading to denial of service.

CVSS3

6

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.2

Confidence

High

EPSS

0

Percentile

5.1%