x86 pv is using an incorrect logic. The vulnerability exists due to insufficient care with non-coherent mappings which allows an attacker to perform unwanted actions.
www.openwall.com/lists/oss-security/2022/06/09/4
xenbits.xen.org/xsa/advisory-402.html
lists.fedoraproject.org/archives/list/[email protected]/message/OH65U6FTTB5MLH5A6Q3TW7KVCGOG4MYI/
lists.fedoraproject.org/archives/list/[email protected]/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
secdb.alpinelinux.org/edge/main.yaml
security.gentoo.org/glsa/202208-23
www.debian.org/security/2022/dsa-5184
xenbits.xenproject.org/xsa/advisory-402.txt