CVEvulnerability
CVE-2022-42335
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-04-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-476
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 configurations
• xen xen 4.17.0
• fedoraproject fedora 38
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- http://www.openwall.com/lists/oss-security/2023/04/25/1 Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-430.html Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202402-07 security.gentoo.org
- https://xenbits.xenproject.org/xsa/advisory-430.txt Patch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2023/04/25/1 Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-430.html Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202402-07 security.gentoo.org
- https://xenbits.xenproject.org/xsa/advisory-430.txt Patch, Vendor Advisory