CVE-2022-45869

kernel: KVM: x86/mmu: race condition in direct_page_fault()

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the TDP MMU are enabled.

Una condición de carrera en el subsistema KVM x86 en el kernel de Linux hasta 6.1-rc6 permite a los usuarios del sistema operativo invitado provocar una denegación de servicio (caída del sistema operativo anfitrión o corrupción de la memoria del sistema operativo anfitrión) cuando la virtualización anidada y la MMU TDP están habilitadas.

A flaw was found in the Linux kernel in the KVM. A race condition in direct_page_fault allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualization and the TDP MMU are enabled.

*Credits: N/A

CVSS Scores

NISTv3.1 5.5

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-11-23 CVE Reserved
2022-11-30 CVE Published
2024-06-22 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=47b0c2e4c220f2251fd8dcfbb44479819c715e15	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-45869	2024-03-19
https://bugzilla.redhat.com/show_bug.cgi?id=2151317	2024-03-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1 Search vendor "Linux" for product "Linux Kernel" and version "6.1"		rc1		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1 Search vendor "Linux" for product "Linux Kernel" and version "6.1"		rc2		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1 Search vendor "Linux" for product "Linux Kernel" and version "6.1"		rc3		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1 Search vendor "Linux" for product "Linux Kernel" and version "6.1"		rc4		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1 Search vendor "Linux" for product "Linux Kernel" and version "6.1"		rc5		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.1 Search vendor "Linux" for product "Linux Kernel" and version "6.1"		rc6		Affected