CVSS: 7.0EPSS: 0%CPEs: 5EXPL: 0CVE-2022-26357
https://notcve.org/view.php?id=CVE-2022-26357
race in VT-d domain ID cleanup Xen domain IDs are up to 15 bits wide. VT-d hardware may allow for only less than 15 bits to hold a domain ID associating a physical device with a particular domain. Therefore internally Xen domain IDs are mapped to the smaller value range. The cleaning up of the housekeeping structures has a race, allowing for VT-d domain IDs to be leaked and flushes to be bypassed. Una carrera en la limpieza del ID de dominio de VT-d Los ID de dominio de Xen presentan hasta 15 bits de ancho. • http://www.openwall.com/lists/oss-security/2022/04/05/2 http://xenbits.xen.org/xsa/advisory-399.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD https://security.gentoo.org/glsa/202402-07 https://www.debian.org/security/2022/dsa-5117 https://xenbits.xenproject.org/xsa/advisory-399.txt • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.0EPSS: 0%CPEs: 1EXPL: 0CVE-2021-28703
https://notcve.org/view.php?id=CVE-2021-28703
grant table v2 status pages may remain accessible after de-allocation (take two) Guest get permitted access to certain Xen-owned pages of memory. The majority of such pages remain allocated / associated with a guest for its entire lifetime. Grant table v2 status pages, however, get de-allocated when a guest switched (back) from v2 to v1. The freeing of such pages requires that the hypervisor know where in the guest these pages were mapped. The hypervisor tracks only one use within guest space, but racing requests from the guest to insert mappings of these pages may result in any of them to become mapped in multiple locations. • https://security.gentoo.org/glsa/202402-07 https://xenbits.xenproject.org/xsa/advisory-387.txt •