CVE-2016-1571
moderate-risk
Published 2016-01-22
The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.
Do I need to act?
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0.30% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.3/10
Medium
NETWORK
/ HIGH complexity
Affected Products (20)
References (8)
Third Party Advisory
http://support.citrix.com/article/CTX205496
Third Party Advisory
http://www.securitytracker.com/id/1034745
Vendor Advisory
http://xenbits.xen.org/xsa/advisory-168.html
Third Party Advisory
http://support.citrix.com/article/CTX205496
Third Party Advisory
http://www.securitytracker.com/id/1034745
Vendor Advisory
http://xenbits.xen.org/xsa/advisory-168.html
44
/ 100
moderate-risk
Severity
19/34 · Moderate
Exploitability
1/34 · Minimal
Exposure
24/34 · High