CVE-2015-8104

Name: CVE-2015-8104
Creator: NVD / NIST
Published: 2015-11-16T11:59:12.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 2.50%

Last modified Jun 17, 2026

CVE-2015-8104 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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.. EPSS estimates a 2.50% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

10/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

2.50%

82.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Xen	Xen	4.3.0
Xen	Xen	4.3.1
Xen	Xen	4.3.2
Xen	Xen	4.3.3
Xen	Xen	4.3.4
Xen	Xen	4.4.0
Xen	Xen	4.4.1
Xen	Xen	4.4.2
Xen	Xen	4.4.3
Xen	Xen	4.5.0
Xen	Xen	4.5.1
Xen	Xen	4.5.2
Xen	Xen	4.6.0
Xen	Xen	4.6.1
Xen	Xen	4.6.2
Xen	Xen	4.6.4
Xen	Xen	4.6.5
Oracle	Solaris	11.3
Oracle	Vm Virtualbox	>= 4.0.0, <= 4.0.34
Oracle	Vm Virtualbox	>= 4.1.0, <= 4.1.42
Oracle	Vm Virtualbox	>= 4.2.0, <= 4.2.34
Oracle	Vm Virtualbox	>= 4.3.0, <= 4.3.35
Oracle	Vm Virtualbox	>= 5.0.0, <= 5.0.13
Linux	Linux Kernel	<= 4.2.3
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.04

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377dIssue Tracking, Patch, Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2636.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2645.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0046.htmlThird Party Advisory
http://support.citrix.com/article/CTX202583Third Party Advisory
http://support.citrix.com/article/CTX203879Third Party Advisory
http://www.debian.org/security/2015/dsa-3414Third Party Advisory
http://www.debian.org/security/2015/dsa-3426Third Party Advisory
http://www.debian.org/security/2016/dsa-3454Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/10/5Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/10/4
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlThird Party Advisory
http://www.securityfocus.com/bid/77524Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/91787Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1034105Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2840-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2841-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2841-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2842-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2842-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2843-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2843-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2844-1Third Party Advisory
http://xenbits.xen.org/xsa/advisory-156.htmlPatch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1278496Issue Tracking, Vendor Advisory
https://github.com/torvalds/linux/commit/cbdb967af3d54993f5814f1cee0ed311a055377dIssue Tracking, Patch, Vendor Advisory
https://kb.juniper.net/JSA10783Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377dIssue Tracking, Patch, Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2636.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2645.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0046.htmlThird Party Advisory
http://support.citrix.com/article/CTX202583Third Party Advisory
http://support.citrix.com/article/CTX203879Third Party Advisory
http://www.debian.org/security/2015/dsa-3414Third Party Advisory
http://www.debian.org/security/2015/dsa-3426Third Party Advisory
http://www.debian.org/security/2016/dsa-3454Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/10/5Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/10/4
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlThird Party Advisory
http://www.securityfocus.com/bid/77524Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/91787Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1034105Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2840-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2841-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2841-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2842-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2842-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2843-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2843-2Third Party Advisory
http://www.ubuntu.com/usn/USN-2844-1Third Party Advisory
http://xenbits.xen.org/xsa/advisory-156.htmlPatch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1278496Issue Tracking, Vendor Advisory
https://github.com/torvalds/linux/commit/cbdb967af3d54993f5814f1cee0ed311a055377dIssue Tracking, Patch, Vendor Advisory
https://kb.juniper.net/JSA10783Third Party Advisory

Timeline

Published: Nov 16, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-8104?

How severe is CVE-2015-8104?

CVE-2015-8104 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 2.50% probability of exploitation in the next 30 days.

How do I fix CVE-2015-8104?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-8104?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST