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Uncontrolled Recursion Affecting xen package, versions <4.15.4-r0

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Availability High

    Threat Intelligence

    EPSS 0.05% (14th percentile)
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NVD
6.5 medium
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SUSE
6 medium

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  • Snyk ID SNYK-ALPINE314-XEN-3136170
  • published 20 Nov 2022
  • disclosed 1 Nov 2022
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Introduced: 1 Nov 2022

CVE-2022-42321 Open this link in a new tab
CWE-674 Open this link in a new tab

How to fix?

Upgrade Alpine:3.14 xen to version 4.15.4-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:3.14 relevant fixed versions and status.

Xenstore: Guests can crash xenstored via exhausting the stack Xenstored is using recursion for some Xenstore operations (e.g. for deleting a sub-tree of Xenstore nodes). With sufficiently deep nesting levels this can result in stack exhaustion on xenstored, leading to a crash of xenstored.

References