Citrix addressed vulnerabilities in Hypervisor that could be exploited by threat actors to execute code in a virtual machine to trigger a denial of service condition on the host. Citrix also fixed another issue, tracked as CVE-2020-35498, that affects Hypervisor 8.2 LTSR only, and which could result in malicious network traffic causing subsequent packets to be dropped. An attacker would have to be able to exploit some of these vulnerabilities to cause a denial-of-service condition. An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV.”]
Source: https://securityaffairs.co/wordpress/116190/security/citrix-hypervisor-dos-flaws.html