CVE-2020-11739

An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service or possibly gain privileges because of missing memory barriers in read-write unlock paths. The read-write unlock paths don't contain a memory barrier. On Arm, this means a processor is allowed to...

PT-2020-12817

Name of the Vulnerable Software and Affected Versions Xen versions through 4.13.x Description An issue in Xen allows guest OS users to cause a denial of service or possibly gain privileges due to missing memory barriers in read-write unlock paths. This means a processor can re-order memory access...