Uncontrolled Recursion Affecting xen package, versions <4.13.4_16-150200.3.65.1


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-SLES152-XEN-3124448
  • published17 Nov 2022
  • disclosed14 Nov 2022

Introduced: 14 Nov 2022

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

How to fix?

Upgrade SLES:15.2 xen to version 4.13.4_16-150200.3.65.1 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 SLES. See How to fix? for SLES:15.2 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