CVE-2014-8481

Severity Score

4.9

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.

El decodificador de instrucciones en arch/x86/kvm/emulate.c en el subsistema KVM en el kernel de Linux anterior a 3.18-rc2 no maneja debidamente las instrucciones inválidas, lo que permite a usuarios del sistema operativo invitado causar una denegación de servicio (referencia a puntero nulo y caída del sistema operativo anfitrión) a través de una aplicación manipulada que provoca (1) una instrucción traída indebidamente o (2) una instrucción que ocupa demasiados bytes. NOTA: esta vulnerabilidad existe debido a una solución incompleta para CVE-2014-8480.

*Credits: N/A

CVSS Scores

NISTv2 4.9

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-10-24 CVE Reserved
2014-11-10 CVE Published
2024-08-06 CVE Updated
2024-08-06 First Exploit
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-399: Resource Management Errors

CAPEC

References (6)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a430c9166312e1aa3d80bce32374233bdbfeba32	X_refsource_confirm
http://secunia.com/advisories/62042	Third Party Advisory
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427	Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=1156615	X_refsource_confirm

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2014/10/23/7	2024-08-06
https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32	2024-08-06

URL	Date	SRC

URL	Date	SRC

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"				<= 3.18 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.18"		rc1		Affected