CVE-2015-4104

Description

Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.

Category

7.8
CVSS
Severity: High
CVSS 2.0 •
EPSS 8.43% Top 10%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2630-1 vendor advisory
https://support.citrix.com/article/CTX206006
http://www.debian.org/security/2015/dsa-3286 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html vendor advisory
http://www.securitytracker.com/id/1032464 vdb entry
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html vendor advisory
http://www.debian.org/security/2015/dsa-3284 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html vendor advisory
http://support.citrix.com/article/CTX201145
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html vendor advisory
https://security.gentoo.org/glsa/201604-03 vendor advisory
http://www.securityfocus.com/bid/74950 vdb entry
http://xenbits.xen.org/xsa/advisory-129.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-4104?
CVE-2015-4104 has been scored as a high severity vulnerability.
How to fix CVE-2015-4104?
To fix CVE-2015-4104, 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-2015-4104 being actively exploited in the wild?
It is possible that CVE-2015-4104 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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