CVE-2016-1570

Severity: high (CVSS 8.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% 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-20

Description

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.

Affected products

xen: 3.4.0, 3.4.1, 4.1.0, 4.1.1, 4.1.2, 4.1.3 (+24)

References

http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034744
http://xenbits.xen.org/xsa/advisory-167.html
http://www.debian.org/security/2016/dsa-3519
http://www.securitytracker.com/id/1034744
http://xenbits.xen.org/xsa/advisory-167.html

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