CVE-2015-7813

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-399

Description

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls, which are not properly handled in the do_physdev_op function in arch/arm/physdev.c, or (2) HYPERVISOR_hvm_op hypercalls, which are not properly handled in the do_hvm_op function in arch/arm/hvm.c.

Affected products

xen: 4.4.0, 4.4.0-rc1, 4.4.1, 4.5.0, 4.5.1, 4.6.0

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://www.debian.org/security/2015/dsa-3414
http://www.securitytracker.com/id/1034029
http://xenbits.xen.org/xsa/advisory-146.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
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
http://www.debian.org/security/2015/dsa-3414
http://www.securitytracker.com/id/1034029

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