The acceleration support for the REP MOVS instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local HVM guests to cause a denial of service (host crash) via unspecified vectors.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Enterprise_linux | Redhat | 5.0 (including) | 5.0 (including) |
| Enterprise_linux_desktop | Redhat | 5.0 (including) | 5.0 (including) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-404.el5 | * |
| Xen | Ubuntu | devel | * |
| Xen | Ubuntu | precise | * |
| Xen | Ubuntu | trusty | * |
| Xen | Ubuntu | upstream | * |
| Xen | Ubuntu | utopic | * |
| Xen | Ubuntu | vivid | * |
| Xen-3.3 | Ubuntu | lucid | * |
| Xen-3.3 | Ubuntu | upstream | * |
References
- http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10705
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
- http://rhn.redhat.com/errata/RHSA-2015-0783.html
- http://secunia.com/advisories/59949
- http://secunia.com/advisories/62672
- http://support.citrix.com/article/CTX200288
- http://support.citrix.com/article/CTX201794
- http://www.debian.org/security/2015/dsa-3140
- http://www.securityfocus.com/bid/71331
- http://xenbits.xenproject.org/xsa/advisory-112.html
- https://security.gentoo.org/glsa/201504-04
- http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10705
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
- http://rhn.redhat.com/errata/RHSA-2015-0783.html
- http://secunia.com/advisories/59949
- http://secunia.com/advisories/62672
- http://support.citrix.com/article/CTX200288
- http://support.citrix.com/article/CTX201794
- http://www.debian.org/security/2015/dsa-3140
- http://www.securityfocus.com/bid/71331
- http://xenbits.xenproject.org/xsa/advisory-112.html
- https://security.gentoo.org/glsa/201504-04