CVE-2015-7812
First published: Tue Nov 17 2015(Updated: )
The hypercall_create_continuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service (host crash) via a preemptible hypercall to the multicall interface.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.4.0 | |
| Xen xen-unstable | =4.4.1 | |
| Xen xen-unstable | =4.4.2 | |
| Xen xen-unstable | =4.4.3 | |
| Xen xen-unstable | =4.5.0 | |
| Xen xen-unstable | =4.5.1 | |
| Xen xen-unstable | =4.5.2 | |
| 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/1034031
- http://xenbits.xen.org/xsa/advisory-145.html
- https://security.gentoo.org/glsa/201604-03
Frequently Asked Questions
What is the severity of CVE-2015-7812?
CVE-2015-7812 is classified as a denial of service vulnerability that can lead to a host crash.
How do I fix CVE-2015-7812?
To fix CVE-2015-7812, update your Xen hypervisor to version 4.6.x or later.
Which versions of Xen are affected by CVE-2015-7812?
Xen versions 4.4.x through 4.6.x are affected by CVE-2015-7812.
Can CVE-2015-7812 be exploited by local users?
Yes, CVE-2015-7812 can be exploited by local guest users through a preemptible hypercall.
What impact does CVE-2015-7812 have on system stability?
CVE-2015-7812 can cause a denial of service, resulting in instability or crash of the host system.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/references
- agent/author
- agent/severity
- agent/remedy
- 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/4.4.1
- version/xen xen-unstable/4.4.2
- version/xen xen-unstable/4.4.3
- version/xen xen-unstable/4.5.0
- version/xen xen-unstable/4.5.1
- version/xen xen-unstable/4.5.2
- version/xen xen-unstable/4.6.0