| 2021-11-24 | CVE-2021-28708 | PoD operations on misaligned GFNs T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] x86 HVM and PVH guests may be started in populate-on-demand (PoD) mode, to provide a way for them to later easily have more memory assigned. | 8.8 |
| 2021-11-21 | CVE-2021-28710 | Improper Privilege Management vulnerability in multiple products
certain VT-d IOMMUs may not work in shared page table mode For efficiency reasons, address translation control structures (page tables) may (and, on suitable hardware, by default will) be shared between CPUs, for second-level translation (EPT), and IOMMUs. | 8.8 |
| 2021-10-06 | CVE-2021-28702 | Improper Privilege Management vulnerability in multiple products
PCI devices with RMRRs not deassigned correctly Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR"). | 7.6 |
| 2021-09-08 | CVE-2021-28701 | Race Condition vulnerability in multiple products
Another race in XENMAPSPACE_grant_table handling Guests are permitted access to certain Xen-owned pages of memory. | 7.8 |
| 2021-08-27 | CVE-2021-28694 | IOMMU page mapping issues on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Both AMD and Intel allow ACPI tables to specify regions of memory which should be left untranslated, which typically means these addresses should pass the translation phase unaltered. | 6.8 |
| 2021-08-27 | CVE-2021-28695 | IOMMU page mapping issues on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Both AMD and Intel allow ACPI tables to specify regions of memory which should be left untranslated, which typically means these addresses should pass the translation phase unaltered. | 6.8 |
| 2021-08-27 | CVE-2021-28696 | Incorrect Authorization vulnerability in multiple products
IOMMU page mapping issues on x86 T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Both AMD and Intel allow ACPI tables to specify regions of memory which should be left untranslated, which typically means these addresses should pass the translation phase unaltered. | 6.8 |
| 2021-08-27 | CVE-2021-28697 | Race Condition vulnerability in multiple products
grant table v2 status pages may remain accessible after de-allocation Guest get permitted access to certain Xen-owned pages of memory. | 7.8 |
| 2021-08-27 | CVE-2021-28698 | Infinite Loop vulnerability in multiple products
long running loops in grant table handling In order to properly monitor resource use, Xen maintains information on the grant mappings a domain may create to map grants offered by other domains. | 5.5 |
| 2021-08-27 | CVE-2021-28699 | inadequate grant-v2 status frames array bounds check The v2 grant table interface separates grant attributes from grant status. | 5.5 |