CVE-2022-42335

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.3%

exploitation probability

0.3%top 81% of all CVEs

observed exploitation

nono source reports it

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.

Affected products

Xen · xen

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/https://security.gentoo.org/glsa/202402-07 https://xenbits.xenproject.org/xsa/advisory-430.txt http://www.openwall.com/lists/oss-security/2023/04/25/1 http://xenbits.xen.org/xsa/advisory-430.html