Security update for xen

Open Source Vulnerabilities SUSE-SU-2021:3322-1

This update for xen fixes the following issues: - CVE-2021-28701: Fixed race condition in XENMAPSPACE_grant_table handling (XSA-384) (bsc#1189632). - CVE-2021-28694,CVE-2021-28695,CVE-2021-28696: Fixed IOMMU page mapping issues on x86 (XSA-378)(bsc#1189373). - CVE-2021-28697: Fixed grant table v2 status pages that may remain accessible after de-allocation (XSA-379)(bsc#1189376). - CVE-2021-28698: Fixed long running loops in grant table handling (XSA-380)(bsc#1189378). - CVE-2021-20255: Fixed eepro100 stack overflow via infinite recursion (bsc#1182654). - CVE-2021-3592: Fixed invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187369). - CVE-2021-3594: Fixed invalid pointer initialization may lead to information disclosure (udp) (bsc#1187378). - CVE-2021-3595: Fixed invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187376). - CVE-2021-28692: Fixed inappropriate x86 IOMMU timeout detection / handling (XSA-373)(bsc#1186429). - CVE-2021-0089: Fixed Speculative Code Store Bypass (XSA-375)(bsc#1186433). - CVE-2021-28690: Fixed x86 TSX Async Abort protections not restored after S3 (XSA-377)(bsc#1186434). - Prevent superpage allocation in the LAPIC and ACPI_INFO range (bsc#1189882).