An issue was discovered in Xen through 4.12.x allowing Arm domU attackers to cause a denial of service (infinite loop) involving a LoadExcl or StoreExcl operation.
Weakness
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | * | 4.12.1 (including) |
| Xen | Ubuntu | bionic | * |
| Xen | Ubuntu | disco | * |
| Xen | Ubuntu | eoan | * |
| Xen | Ubuntu | esm-infra/bionic | * |
| Xen | Ubuntu | esm-infra/xenial | * |
| Xen | Ubuntu | trusty | * |
| Xen | Ubuntu | xenial | * |
References
- http://xenbits.xen.org/xsa/advisory-295.html
- https://seclists.org/bugtraq/2020/Jan/21
- https://www.debian.org/security/2020/dsa-4602
- https://xenbits.xen.org/xsa/advisory-295.html
- http://xenbits.xen.org/xsa/advisory-295.html
- https://seclists.org/bugtraq/2020/Jan/21
- https://www.debian.org/security/2020/dsa-4602
- https://xenbits.xen.org/xsa/advisory-295.html