{"schemaVersion":3,"id":"CVE-2021-28702","aliases":["ALPINE-CVE-2021-28702","UBUNTU-CVE-2021-28702","DEBIAN-CVE-2021-28702","openSUSE-SU-2024:11624-1"],"status":"published","duplicateOf":null,"title":null,"description":"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\"). These are typically used for platform tasks such as legacy USB emulation. If such a device is passed through to a guest, then on guest shutdown the device is not properly deassigned. The IOMMU configuration for these devices which are not properly deassigned ends up pointing to a freed data structure, including the IO Pagetables. 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