CVE-2016-1570 Privilege escalation in n/a

High 8.5 Published 22 Jan 2016 Updated 5 Aug 2024

Local PV guests can gain privileges, cause denial of service, or read sensitive information via crafted page identifiers in Xen hypervisor.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2016-1570?

CVE-2016-1570 is a high-severity vulnerability in Xen Xen, published on 22 Jan 2016. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-20

Which versions are affected by CVE-2016-1570?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2016-1570?

Apply the vendor's patch.

Is CVE-2016-1570 being exploited?

There is no known exploitation of CVE-2016-1570 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-1570, GHSA-w7v4-4295-6vg3, UBUNTU-CVE-2016-1570.