CVE-2015-8338

Description

Xen 4.6.x and earlier does not properly enforce limits on page order inputs for the (1) XENMEM_increase_reservation, (2) XENMEM_populate_physmap, (3) XENMEM_exchange, and possibly other HYPERVISOR_memory_op suboperations, which allows ARM guest OS administrators to cause a denial of service (CPU consumption, guest reboot, or watchdog timeout and host reboot) and possibly have unspecified other impact via unknown vectors.

Category

7.2
CVSS
Severity: High
CVSS 2.0 •
EPSS 0.20%
Vendor Advisory debian.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/78920 vdb entry
http://xenbits.xen.org/xsa/advisory-158.html vendor advisory
http://www.securitytracker.com/id/1034390 vdb entry
http://www.debian.org/security/2016/dsa-3633 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8338?
CVE-2015-8338 has been scored as a high severity vulnerability.
How to fix CVE-2015-8338?
To fix CVE-2015-8338, 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-2015-8338 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-8338 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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