CVE-2016-1571

Severity: medium (CVSS 6.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-01-22 · updated 2026-06-17
Weakness: CWE-17

Description

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.

Affected products

Citrix XenServer: through 6.5
xen: 3.3.0, 3.3.1, 3.3.2, 3.4.0, 3.4.1, 3.4.2 (+30)

References

http://support.citrix.com/article/CTX205496
http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034745
http://xenbits.xen.org/xsa/advisory-168.html
http://support.citrix.com/article/CTX205496
http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034745
http://xenbits.xen.org/xsa/advisory-168.html

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