<p>Upgrade <code>Alpine:3.20</code> <code>xen</code> to version 4.17.0-r0 or higher.</p>

Improper Handling of Exceptional Conditions Affecting xen package, versions <4.17.0-r0

Threat Intelligence

0.05% (16^th percentile)

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Snyk ID SNYK-ALPINE320-XEN-7012731
published 23 May 2024
disclosed 11 Oct 2022

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Introduced: 11 Oct 2022

CVE-2022-33748 Open this link in a new tab CWE-755 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.17.0-r0 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.

lock order inversion in transitive grant copy handling As part of XSA-226 a missing cleanup call was inserted on an error handling path. While doing so, locking requirements were not paid attention to. As a result two cooperating guests granting each other transitive grants can cause locks to be acquired nested within one another, but in respectively opposite order. With suitable timing between the involved grant copy operations this may result in the locking up of a CPU.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

High
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Changed

Confidentiality (C)

None
Integrity (I)

None
Availability (A)

High