CVE-2015-7970

Description

The p2m_pod_emergency_sweep function in arch/x86/mm/p2m-pod.c in Xen 3.4.x, 3.5.x, and 3.6.x is not preemptible, which allows local x86 HVM guest administrators to cause a denial of service (CPU consumption and possibly reboot) via crafted memory contents that triggers a "time-consuming linear scan," related to Populate-on-Demand.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/77362 vdb entry
http://support.citrix.com/article/CTX202404
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html vendor advisory
http://www.securitytracker.com/id/1034034 vdb entry
http://xenbits.xen.org/xsa/advisory-150.html vendor advisory
http://www.debian.org/security/2015/dsa-3414 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html vendor advisory
https://security.gentoo.org/glsa/201604-03 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-7970?
CVE-2015-7970 has been scored as a medium severity vulnerability.
How to fix CVE-2015-7970?
To fix CVE-2015-7970, 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-2015-7970 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-7970 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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