10 security updates
x86 pv: Crash when handling guest access to MSR_MISC_ENABLE [XSA-333,
CVE-2020-25602]
Missing unlock in XENMEM_acquire_resource error path [XSA-334,
CVE-2020-25598]
race when migrating timers between x86 HVM vCPU-s [XSA-336,
CVE-2020-25604]
PCI passthrough code reading back hardware registers [XSA-337,
CVE-2020-25595]
once valid event channels may not turn invalid [XSA-338, CVE-2020-25597]
x86 pv guest kernel DoS via SYSENTER [XSA-339, CVE-2020-25596]
Missing memory barriers when accessing/allocating an event channel [XSA-340,
CVE-2020-25603]
out of bounds event channels available to 32-bit x86 domains [XSA-342,
CVE-2020-25600]
races with evtchn_reset() [XSA-343, CVE-2020-25599]
lack of preemption in evtchn_reset() / evtchn_destroy() [XSA-344,
CVE-2020-25601]