CVE-2013-4494

kernel: xen: Lock order reversal between page allocation and grant table locks

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors.

Xen con versiones enteriores a 4.1.x, 4.2.x, 4.3.x, y no toma la page_alloc_lock grant_table.lock en el mismo orden, lo que permite a los administradores invitados locales con acceso a múltiples vcpus causar una denegación de servicio (bloqueo host) a través sin especificar vectores.

The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that the Xen hypervisor did not always lock 'page_alloc_lock' and 'grant_table.lock' in the same order. This could potentially lead to a deadlock. A malicious guest administrator could use this flaw to cause a denial of service on the host.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

Attack Vector

Adjacent

Attack Complexity

High

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-06-12 CVE Reserved
2013-11-02 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (11)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2013/11/01/2	Mailing List
http://www.openwall.com/lists/oss-security/2013/11/01/3	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html	2018-12-13
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html	2018-12-13
http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html	2018-12-13
http://lists.opensuse.org/opensuse-updates/2013-12/msg00059.html	2018-12-13
http://rhn.redhat.com/errata/RHSA-2014-0108.html	2018-12-13
http://security.gentoo.org/glsa/glsa-201407-03.xml	2018-12-13
http://www.debian.org/security/2014/dsa-3006	2018-12-13
https://access.redhat.com/security/cve/CVE-2013-4494	2014-01-29
https://bugzilla.redhat.com/show_bug.cgi?id=1026243	2014-01-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				>= 4.1.0 <= 4.1.6.1 Search vendor "Xen" for product "Xen" and version " >= 4.1.0 <= 4.1.6.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				>= 4.2.0 <= 4.2.5 Search vendor "Xen" for product "Xen" and version " >= 4.2.0 <= 4.2.5"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				>= 4.3.0 <= 4.3.4 Search vendor "Xen" for product "Xen" and version " >= 4.3.0 <= 4.3.4"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected