CVE-2014-7156

Description

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

Category

3.3
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.80% Top 30%
Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html vendor advisory
http://xenbits.xen.org/xsa/advisory-106.html patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html vendor advisory
http://support.citrix.com/article/CTX200218
http://www.securityfocus.com/bid/70062 vdb entry
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html vendor advisory
http://www.securitytracker.com/id/1030889 vdb entry
http://www.debian.org/security/2014/dsa-3041 vendor advisory
http://secunia.com/advisories/61858 third party advisory
http://secunia.com/advisories/61890 third party advisory
http://secunia.com/advisories/61500 third party advisory
http://security.gentoo.org/glsa/glsa-201412-42.xml vendor advisory

Frequently Asked Questions

What is the severity of CVE-2014-7156?
CVE-2014-7156 has been scored as a low severity vulnerability.
How to fix CVE-2014-7156?
To fix CVE-2014-7156, 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-2014-7156 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2014-7156 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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