Homepage
About Snyk

CVE-2022-26363 Affecting xen package, versions <4.15.2-r1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (27th percentile)
Expand this section
NVD
6.7 medium
Expand this section
SUSE
8.1 high

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-ALPINE314-XEN-2869394
  • published 14 Jun 2022
  • disclosed 9 Jun 2022
Report a new vulnerability Found a mistake?

Introduced: 9 Jun 2022

CVE-2022-26363 Open this link in a new tab

How to fix?

Upgrade Alpine:3.14 xen to version 4.15.2-r1 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:3.14 relevant fixed versions and status.

x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, Xen's safety logic doesn't account for CPU-induced cache non-coherency; cases where the CPU can cause the content of the cache to be different to the content in main memory. In such cases, Xen's safety logic can incorrectly conclude that the contents of a page is safe.