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CVE-2015-8104

10.0 · CRITICAL

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) excep…

Published Nov 16, 2015xenCWE-399EPSS 2.48%

Overview

CVE-2015-8104 is a critical-severity vulnerability affecting xen xen. It was published on November 16, 2015 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.

Remediation

Check the references section for vendor advisories and patches from xen. Update xen to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
oraclevm_virtualbox4.0.0Affected
linuxlinux_kernel0Affected

References

Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377dReflists.fedoraproject.org/pipermail/package-announce/2015-November/172187.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-November/172300.htmlReflists.fedoraproject.org/pipermail/package-announce/2015-November/172435.htmlReflists.opensuse.org/opensuse-security-announce/2015-11/msg00035.htmlReflists.opensuse.org/opensuse-security-announce/2015-12/msg00005.htmlReflists.opensuse.org/opensuse-security-announce/2015-12/msg00026.htmlReflists.opensuse.org/opensuse-security-announce/2015-12/msg00031.htmlReflists.opensuse.org/opensuse-security-announce/2016-02/msg00013.htmlReflists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-8104?

CVE-2015-8104 is a critical-severity vulnerability affecting xen xen. It was published on November 16, 2015 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2015-8104?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-8104?

Check the references section for vendor advisories and patches from xen. Update xen to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2015-8104?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-8104 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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