CVE-2016-1571

medium

Published 2016-01-22 · Modified 2026-05-06

CVSS v3

6.3

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

CVSS v2

4.7

VIR risk

6.3

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.

Predictions

Exploit likelihood

73%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-1571

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://xenbits.xen.org/xsa/advisory-168.html

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`4.8.0~rc3-1`
debian	bullseye	fixed	`4.8.0~rc3-1`
debian	forky	fixed	`4.8.0~rc3-1`
debian	sid	fixed	`4.8.0~rc3-1`
debian	trixie	fixed	`4.8.0~rc3-1`

Application impact

Vendor	Product	Versions	Fixed
citrix	xenserver	`{"endIncluding":"6.5"}`

References

CWEs

CWE-17

Verify integrity in audit chain (admin only). AS-IS.