Vulnerability Description
The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 2.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | <= 4.8.1 |
Related Weaknesses (CWE)
References
- http://www.debian.org/security/2017/dsa-3969
- http://www.securitytracker.com/id/1038734
- https://security.gentoo.org/glsa/201708-03
- https://security.gentoo.org/glsa/201710-17
- https://xenbits.xen.org/xsa/advisory-224.htmlPatchVendor Advisory
- http://www.debian.org/security/2017/dsa-3969
- http://www.securitytracker.com/id/1038734
- https://security.gentoo.org/glsa/201708-03
- https://security.gentoo.org/glsa/201710-17
- https://xenbits.xen.org/xsa/advisory-224.htmlPatchVendor Advisory
FAQ
What is CVE-2017-10921?
CVE-2017-10921 is a vulnerability with a CVSS score of 10.0 (CRITICAL). The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count...
How severe is CVE-2017-10921?
CVE-2017-10921 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-10921?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen.