CVE-2014-8594

MEDIUM

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

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

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

http://secunia.com/advisories/62672

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

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

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

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

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

Details

Source: MITRE

Published: 2014-11-19

Updated: 2018-10-30

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5.4

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

Impact Score: 6.9

Exploitability Score: 4.9

Severity: MEDIUM