CVE-2022-42311

CVE-2022-42311

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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

CVSS 6.5 · Medium · EPSS 0.3% · Fix available

Published

2022-11-01T00:00:00.000Z

Updated

2025-05-06T15:05:48.860Z

Stack: system

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