Xenstore: guests can let run xenstored out of memory T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Malicious guests can cause xenstored to allocate vast amounts of memory, eventually resulting in a Denial of Service (DoS) of xenstored. There are multiple ways how guests can cause large memory allocations in xenstored: - - by issuing new requests to xenstored without reading the responses, causing the responses to be buffered in memory - - by causing large number of watch events to be generated via setting up multiple xenstore watches and then e.g. deleting many xenstore nodes below the watched path - - by creating as many nodes as allowed with the maximum allowed size and path length in as many transactions as possible - - by accessing many nodes inside a transaction
History

Mon, 05 May 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: XEN

Published: 2022-11-01T00:00:00.000Z

Updated: 2025-05-05T19:52:32.158Z

Reserved: 2022-10-03T00:00:00.000Z

Link: CVE-2022-42317

cve-icon Vulnrichment

Updated: 2024-08-03T13:03:45.932Z

cve-icon NVD

Status : Modified

Published: 2022-11-01T13:15:11.660

Modified: 2025-05-05T20:15:18.737

Link: CVE-2022-42317

cve-icon Redhat

No data.