CVE-2021-28703HIGHCVSS 7.0≥ Branch 4.13, ≤ 4.132021-12-07
CVE-2021-28703 [HIGH] CVE-2021-28703: grant table v2 status pages may remain accessible after de-allocation (take two) Guest get permitted
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 p
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