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Release of Invalid Pointer or Reference Affecting xen package, versions <4.15.4-r0

0.0
high

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.05% (14th percentile)
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NVD
8.8 high
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SUSE
7.5 high

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  • Snyk ID SNYK-ALPINE315-XEN-3100275
  • published 3 Nov 2022
  • disclosed 1 Nov 2022
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Introduced: 1 Nov 2022

CVE-2022-42309 Open this link in a new tab
CWE-763 Open this link in a new tab

How to fix?

Upgrade Alpine:3.15 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:3.15 relevant fixed versions and status.

Xenstore: Guests can crash xenstored Due to a bug in the fix of XSA-115 a malicious guest can cause xenstored to use a wrong pointer during node creation in an error path, resulting in a crash of xenstored or a memory corruption in xenstored causing further damage. Entering the error path can be controlled by the guest e.g. by exceeding the quota value of maximum nodes per domain.

References