CVE-2015-4163: Null Pointer Dereference
First published: Mon Jun 15 2015(Updated: )
GNTTABOP_swap_grant_ref in Xen 4.2 through 4.5 does not check the grant table operation version, which allows local guest domains to cause a denial of service (NULL pointer dereference) via a hypercall without a GNTTABOP_setup_table or GNTTABOP_set_version.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.2.0 | |
| Xen xen-unstable | =4.2.1 | |
| Xen xen-unstable | =4.2.2 | |
| Xen xen-unstable | =4.2.3 | |
| Xen xen-unstable | =4.3.0 | |
| Xen xen-unstable | =4.3.1 | |
| Xen xen-unstable | =4.3.4 | |
| 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 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/75141
- http://www.securitytracker.com/id/1032568
- http://xenbits.xen.org/xsa/advisory-134.html
- https://security.gentoo.org/glsa/201604-03
- https://support.citrix.com/article/CTX206006
Frequently Asked Questions
What is the severity of CVE-2015-4163?
CVE-2015-4163 has a medium severity level as it allows local guest domains to cause a denial of service through a NULL pointer dereference.
How do I fix CVE-2015-4163?
To fix CVE-2015-4163, upgrade your Xen software to a version that is not affected, starting from version 4.5.0 and later.
Which versions of Xen are affected by CVE-2015-4163?
CVE-2015-4163 affects Xen versions 4.2.0 through 4.5.0, including versions 4.2.x, 4.3.x, and 4.4.x.
What impact does CVE-2015-4163 have on Xen systems?
CVE-2015-4163 allows for a denial of service attack, leading to potential crashes of guest domains.
Can CVE-2015-4163 be exploited remotely?
CVE-2015-4163 cannot be exploited remotely as it requires local access within the guest domain.
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/author
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.2.0
- version/xen xen-unstable/4.2.1
- version/xen xen-unstable/4.2.2
- version/xen xen-unstable/4.2.3
- version/xen xen-unstable/4.3.0
- version/xen xen-unstable/4.3.1
- version/xen xen-unstable/4.3.4
- 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