Vulnerability Description
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | 3.1.3 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/75149
- http://www.securitytracker.com/id/1032569
- http://xenbits.xen.org/xsa/advisory-136.htmlVendor Advisory
- https://security.gentoo.org/glsa/201604-03
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
FAQ
What is CVE-2015-4164?
CVE-2015-4164 is a vulnerability with a CVSS score of 4.9 (MEDIUM). The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a...
How severe is CVE-2015-4164?
CVE-2015-4164 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-4164?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen.