Vulnerability 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).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opensuse | Opensuse | 13.1 |
| Debian | Debian Linux | 7.0 |
| Xen | Xen | 4.0.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.htmlThird Party Advisory
- http://secunia.com/advisories/62672Permissions Required
- http://www.debian.org/security/2015/dsa-3140Third Party Advisory
- http://www.securityfocus.com/bid/71149
- http://xenbits.xen.org/xsa/advisory-109.htmlPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98767
- https://security.gentoo.org/glsa/201504-04
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.htmlThird Party Advisory
- http://secunia.com/advisories/62672Permissions Required
- http://www.debian.org/security/2015/dsa-3140Third Party Advisory
- http://www.securityfocus.com/bid/71149
- http://xenbits.xen.org/xsa/advisory-109.htmlPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98767
FAQ
What is CVE-2014-8594?
CVE-2014-8594 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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...
How severe is CVE-2014-8594?
CVE-2014-8594 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-8594?
Check the references section above for vendor advisories and patch information. Affected products include: Opensuse Opensuse, Debian Debian Linux, Xen Xen.