CVE-2011-4347

kernel: kvm: device assignment DoS

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The kvm_vm_ioctl_assign_device function in virt/kvm/assigned-dev.c in the KVM subsystem in the Linux kernel before 3.1.10 does not verify permission to access PCI configuration space and BAR resources, which allows host OS users to assign PCI devices and cause a denial of service (host OS crash) via a KVM_ASSIGN_PCI_DEVICE operation.

La función kvm_vm_ioctl_assign_device en virt/kvm/assigned-dev.c de los subsistemas KVM en los kernel Linux anteriores a v3.1.10 no verifica los permisos de acceso al espacio de configuración PCI y recursos BAR, permitiendo que usuarios del SO asignen dispositivos PCI y provoquen una denegación del servicio (parada del SO) mediante una operación KVM_ASSIGN_PCI_DEVICE.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

High

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-11-04 CVE Reserved
2012-02-21 CVE Published
2023-03-07 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (5)

URL	Tag	Source
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.10	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2011/11/24/7	Mailing List
https://github.com/torvalds/linux/commit/c4e7f9022e506c6635a5037713c37118e23193e4	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=756084	2012-06-26
https://access.redhat.com/security/cve/CVE-2011-4347	2012-06-26

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"				<= 3.1.9 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.1.9"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.1 Search vendor "Linux" for product "Linux Kernel" and version "3.1.1"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.2 Search vendor "Linux" for product "Linux Kernel" and version "3.1.2"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.3 Search vendor "Linux" for product "Linux Kernel" and version "3.1.3"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.4 Search vendor "Linux" for product "Linux Kernel" and version "3.1.4"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.5 Search vendor "Linux" for product "Linux Kernel" and version "3.1.5"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.6 Search vendor "Linux" for product "Linux Kernel" and version "3.1.6"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.7 Search vendor "Linux" for product "Linux Kernel" and version "3.1.7"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.1.8 Search vendor "Linux" for product "Linux Kernel" and version "3.1.8"		-		Affected