CVE-2015-7971

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-10-30 · updated 2026-06-17
Weakness: CWE-19

Description

Xen 3.2.x through 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properly handled in the do_xenoprof_op function in common/xenoprof.c, or (2) HYPERVISOR_xenpmu_op hypercalls, which are not properly handled in the do_xenpmu_op function in arch/x86/cpu/vpmu.c.

Affected products

xen: 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.3.0, 3.3.1 (+31)

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
http://support.citrix.com/article/CTX202404
http://www.debian.org/security/2015/dsa-3414
http://www.securityfocus.com/bid/77363
http://www.securitytracker.com/id/1034035
http://xenbits.xen.org/xsa/advisory-152.html
https://security.gentoo.org/glsa/201604-03
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html

Get alerted when CVE-2015-7971 or the next vulnerability affects your stack