xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs…) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must scrub them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | 4.12.0 (including) | 4.15.0 (including) |
| Xen | Xen | 4.15.0-rc1 (including) | 4.15.0-rc1 (including) |
| Xen | Ubuntu | bionic | * |
| Xen | Ubuntu | focal | * |
| Xen | Ubuntu | groovy | * |
| Xen | Ubuntu | hirsute | * |
| Xen | Ubuntu | impish | * |
| Xen | Ubuntu | kinetic | * |
| Xen | Ubuntu | lunar | * |
| Xen | Ubuntu | mantic | * |
| Xen | Ubuntu | oracular | * |
| Xen | Ubuntu | plucky | * |
| Xen | Ubuntu | trusty | * |
| Xen | Ubuntu | xenial | * |