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CVE-2022-42335

HIGH
7.8
CVSS Score
Published: April 25, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:04 AM UTC
2 products affected across 2 vendorsFedoraXen

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora· Fedora Projectrpm
95%
38
Xen· Xenwordpress-plugin
95%
4.17.0
Vendor states this is fixed in consult Xen advisory XSA-430 (unknown)

References (5)

Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/04/25/1
PatchVendor Advisory
Source: [email protected]
http://xenbits.xen.org/xsa/advisory-430.html
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/
Vendor Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202402-07
PatchVendor Advisory
Source: [email protected]
https://xenbits.xenproject.org/xsa/advisory-430.txt

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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