description: 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.
problem types: unknown
affected:
{
vendor: Xen
product: xen
versions:
version: consult Xen advisory XSA-425, status: unknown
}
metrics:
other: [
type: unknown
content: {'description': {'description_data': [{'lang': 'eng', 'value': 'A malicious guest could try to kexec until it hits the xenstored bug,\nresulting in the inability to perform any further domain administration\nlike starting new guests, or adding/removing resources to or from any\nexisting guest.'}]}}
]