[3.9] main/xen: security fixes for XSA-312, XSA-320, XSA-317, XSA-319, XSA-321, XSA-327 and XSA-328
Upgrade to Xen 4.11.4 - fixes XSA-312 (no CVE). Note that this release was never properly announced by the upstream.
Add patches for recent CVEs:
- CVE-2020-0543
- CVE-2020-15566
- CVE-2020-15563
- CVE-2020-15565
- CVE-2020-15564
- CVE-2020-15567
Backports of !10194 (merged) and !9103 (merged) to 3.9-stable.
Edited by Daniel Néri