CVE-2022-42335

EPSS 0.3%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.3%KEV nãoPoC —Patch referenciado

Lifecycle

25 Apr 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

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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