CVE-2015-7813
First published: Fri Oct 30 2015(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.4.0 | |
| Xen xen-unstable | =4.4.0-rc1 | |
| Xen xen-unstable | =4.4.1 | |
| Xen xen-unstable | =4.5.0 | |
| Xen xen-unstable | =4.5.1 | |
| Xen xen-unstable | =4.6.0 |
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Reference Links
- 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
Frequently Asked Questions
What is the severity of CVE-2015-7813?
CVE-2015-7813 is classified as a medium severity vulnerability due to its potential to cause a denial of service.
How do I fix CVE-2015-7813?
To fix CVE-2015-7813, update your Xen hypervisor to a version that includes the patch addressing this vulnerability.
What versions of Xen are affected by CVE-2015-7813?
CVE-2015-7813 affects Xen versions 4.4.x, 4.5.x, and 4.6.x.
What type of attack does CVE-2015-7813 enable?
CVE-2015-7813 enables local guests to perform a denial of service attack by exploiting unimplemented hypercalls.
What component of Xen is impacted by CVE-2015-7813?
CVE-2015-7813 impacts the handling of HYPERVISOR_physdev_op hypercalls in the do_physdev_op function.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/references
- agent/author
- agent/severity
- agent/last-modified-date
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.4.0
- version/xen xen-unstable/4.4.0-rc1
- version/xen xen-unstable/4.4.1
- version/xen xen-unstable/4.5.0
- version/xen xen-unstable/4.5.1
- version/xen xen-unstable/4.6.0