CVE-2014-8594

high

Description

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).

References

Advisories
More

http://www.debian.org/security/2015/dsa-3140

http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html

https://security.gentoo.org/glsa/201504-04

https://exchange.xforce.ibmcloud.com/vulnerabilities/98767

http://xenbits.xen.org/xsa/advisory-109.html

http://www.securityfocus.com/bid/71149

http://secunia.com/advisories/62672

Details

Source: Mitre, NVD

Published: 2014-11-19

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 5.4

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

Severity: Medium

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.01876