CVE-2022-42313: debian debian_linux

Vulnerability summary

CVE-2022-42313 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 18.2% of scored vulnerabilities.

Timeline

1. 01-11-2022
   PublishedVulnerability first disclosed.
2. 06-05-2025
   Last modifiedVulnerability information updated.

Description

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

• CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.