<p>Upgrade <code>Alpine:3.20</code> <code>xen</code> to version 4.16.1-r2 or higher.</p>

CVE-2022-26364 Affecting xen package, versions <4.16.1-r2

Threat Intelligence

0.12% (48^th percentile)

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Snyk ID SNYK-ALPINE320-XEN-7012479
published 23 May 2024
disclosed 9 Jun 2022

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Introduced: 9 Jun 2022

CVE-2022-26364 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.16.1-r2 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 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.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

High
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

High
Availability (A)

High