description: Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
problem types: unknown
affected:
{
product: Linux
vendor: Linux
versions:
status: unknown, version: consult Xen advisory XSA-403
}
{
product: xen
vendor: Xen
versions:
status: unknown, version: consult Xen advisory XSA-403
}
metrics:
other: [
content: {'description': {'description_data': [{'lang': 'eng', 'value': 'An untrusted backend can access data not intended to be shared.  If such\nmappings are made with write permissions the backend could also cause\nmalfunctions and/or crashes to consumers of contiguous data in the shared\npages.'}]}}
type: unknown
]