Uncontrolled Recursion Affecting xen-tools package, versions <4.14.5_08-150300.3.40.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-SLES153-XENTOOLS-3124223
  • published17 Nov 2022
  • disclosed11 Nov 2022

Introduced: 11 Nov 2022

CVE-2022-42321  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 xen-tools to version 4.14.5_08-150300.3.40.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-tools package and not the xen-tools package as distributed by SLES. See How to fix? for SLES:15.3 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.

CVSS Base Scores

version 3.1