CVE-2022-42321 - CVE House
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Status published Medium CVE-2022-42321

Xenstore: Guests can crash xenstored via exhausting the stack Xenstored...

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • {'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by David Vrabel of Amazon.'}]}}}

References

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Affected Vendor

Affected Software

xen
Vulnerable Versions:
consult Xen advisory XSA-418

Timeline

Official Publish: November 1st, 2022
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.