CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HWhen grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant is "pinned"), what is being supplied back to actually carry out permission checks and copy operation may not be consistent: The permission check may be carried out on a page different from the one involved in the copy.
Multiple vulnerabilities have been discovered in Xen virtualization software. These vulnerabilities allow for potential data compromise, denial of service, and privilege escalation. The affected Xen versions are all with…
Multiple vulnerabilities have been discovered in Citrix XenServer, allowing for remote code execution and denial of service attacks. These vulnerabilities exist in versions 8.4 and 9 without the latest security patch. Ci…