Guests can cause Xenstore crash via soft reset When a guest issues a Soft Reset (e.g. for performing a kexec) the libxl based Xen toolstack will normally perform a XS_RELEASE Xenstore operation. Due to a bug in xenstored this can result in a crash of xenstored. Any other use of XS_RELEASE will have the same impact.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | 4.17.0 (including) | 4.17.0 (including) |
| Xen | Ubuntu | bionic | * |
| Xen | Ubuntu | focal | * |
| Xen | Ubuntu | kinetic | * |
| Xen | Ubuntu | lunar | * |
| Xen | Ubuntu | mantic | * |
| Xen | Ubuntu | oracular | * |
| Xen | Ubuntu | plucky | * |
| Xen | Ubuntu | trusty | * |
| Xen | Ubuntu | xenial | * |