An issue was discovered in Xen 4.8.x through 4.11.x allowing x86 PV guest OS users to cause a denial of service because mishandling of failed IOMMU operations causes a bug check during the cleanup of a crashed guest.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | 4.8.0 (including) | 4.11.2 (including) |
| Xen | Ubuntu | bionic | * |
| Xen | Ubuntu | disco | * |
| Xen | Ubuntu | eoan | * |
| Xen | Ubuntu | esm-infra/bionic | * |
| Xen | Ubuntu | groovy | * |
| Xen | Ubuntu | hirsute | * |
| Xen | Ubuntu | impish | * |
| Xen | Ubuntu | trusty | * |
| Xen | Ubuntu | xenial | * |
References
- http://www.openwall.com/lists/oss-security/2019/10/25/4
- http://xenbits.xen.org/xsa/advisory-291.html
- https://seclists.org/bugtraq/2020/Jan/21
- https://www.debian.org/security/2020/dsa-4602
- https://xenbits.xen.org/xsa/advisory-291.html
- http://www.openwall.com/lists/oss-security/2019/10/25/4
- http://xenbits.xen.org/xsa/advisory-291.html
- https://seclists.org/bugtraq/2020/Jan/21
- https://www.debian.org/security/2020/dsa-4602
- https://xenbits.xen.org/xsa/advisory-291.html