CVE-2014-8594

Severity: medium (CVSS 5.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-11-19 · updated 2026-06-17
Weakness: CWE-20

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).

Affected products

Debian Linux: 7.0
Opensuse: 13.1, 13.2
xen: 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.1.0 (+12)

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
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

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