CVE-2012-5515

critical

Description

The (1) XENMEM_decrease_reservation, (2) XENMEM_populate_physmap, and (3) XENMEM_exchange hypercalls in Xen 4.2 and earlier allow local guest administrators to cause a denial of service (long loop and hang) via a crafted extent_order value.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/80479

https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-5407

http://www.securityfocus.com/bid/56798

http://www.osvdb.org/88127

http://www.openwall.com/lists/oss-security/2012/12/03/9

http://www.debian.org/security/2012/dsa-2582

http://support.citrix.com/article/CTX135777

http://security.gentoo.org/glsa/glsa-201309-24.xml

http://secunia.com/advisories/55082

http://secunia.com/advisories/51495

http://secunia.com/advisories/51487

http://secunia.com/advisories/51486

http://secunia.com/advisories/51468

http://secunia.com/advisories/51397

http://lists.xen.org/archives/html/xen-announce/2012-12/msg00001.html

http://lists.opensuse.org/opensuse-updates/2013-04/msg00052.html

http://lists.opensuse.org/opensuse-updates/2013-04/msg00051.html

http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html

http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00019.html

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00018.html

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00000.html

Details

Source: Mitre, NVD

Published: 2012-12-13

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 4.7

Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Severity: Critical

EPSS

EPSS: 0.00411