CVE-2016-5242

Description

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.

5.6

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.14%

Vendor Advisory debian.org Vendor Advisory xen.org

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/bid/91015	vdb entry
http://xenbits.xen.org/xsa/advisory-181.html	vendor advisory
http://www.securitytracker.com/id/1036035	vdb entry
http://www.debian.org/security/2016/dsa-3633	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-5242?: CVE-2016-5242 has been scored as a medium severity vulnerability.
How to fix CVE-2016-5242?: To fix CVE-2016-5242, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-5242 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2016-5242 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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