CVE-2015-7972

Description

The (1) libxl_set_memory_target function in tools/libxl/libxl.c and (2) libxl__build_post function in tools/libxl/libxl_dom.c in Xen 3.4.x through 4.6.x do not properly calculate the balloon size when using the populate-on-demand (PoD) system, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors related to "heavy memory pressure."

Category

2.1
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://support.citrix.com/article/CTX202404
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html vendor advisory
http://xenbits.xen.org/xsa/advisory-153.html vendor advisory
http://www.securityfocus.com/bid/77365 vdb entry
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html vendor advisory
http://www.debian.org/security/2015/dsa-3414 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html vendor advisory
https://security.gentoo.org/glsa/201604-03 vendor advisory
http://www.securitytracker.com/id/1034036 vdb entry

Frequently Asked Questions

What is the severity of CVE-2015-7972?
CVE-2015-7972 has been scored as a low severity vulnerability.
How to fix CVE-2015-7972?
To fix CVE-2015-7972, 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-2015-7972 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-7972 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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