Uncontrolled Recursion Affecting xen-tools package, versions <4.10.4_40-150000.3.84.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES150-XENTOOLS-3112077
  • published10 Nov 2022
  • disclosed9 Nov 2022

Introduced: 9 Nov 2022

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

How to fix?

Upgrade SLES:15.0 xen-tools to version 4.10.4_40-150000.3.84.1 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:15.0 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 Scores

version 3.1