The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service (memory corruption), or possibly execute arbitrary code via unspecified vectors.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fedora | Fedoraproject | 20 (including) | 20 (including) |
| Fedora | Fedoraproject | 21 (including) | 21 (including) |
| Fedora | Fedoraproject | 22 (including) | 22 (including) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-409.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=JSA10761
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://support.citrix.com/article/CTX200484
- http://www.debian.org/security/2015/dsa-3181
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securityfocus.com/bid/73015
- http://www.securitytracker.com/id/1031806
- http://www.securitytracker.com/id/1031903
- http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
- http://xenbits.xen.org/xsa/advisory-123.html
- https://security.gentoo.org/glsa/201604-03
- http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10761
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://support.citrix.com/article/CTX200484
- http://www.debian.org/security/2015/dsa-3181
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securityfocus.com/bid/73015
- http://www.securitytracker.com/id/1031806
- http://www.securitytracker.com/id/1031903
- http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
- http://xenbits.xen.org/xsa/advisory-123.html
- https://security.gentoo.org/glsa/201604-03