NULL Pointer Dereference Affecting xen package, versions <4.17.0-r5
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Test your applications- Snyk ID SNYK-ALPINE320-XEN-7012704
- published 23 May 2024
- disclosed 25 Apr 2023
Introduced: 25 Apr 2023
CVE-2022-42335 Open this link in a new tabHow to fix?
Upgrade Alpine:3.20 xen to version 4.17.0-r5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine.
See How to fix? for Alpine:3.20 relevant fixed versions and status.
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.
References
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/
- http://www.openwall.com/lists/oss-security/2023/04/25/1
- http://xenbits.xen.org/xsa/advisory-430.html
- 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