{"api_version":"1","generated_at":"2026-04-22T23:53:34+00:00","cve":"CVE-2022-42311","urls":{"html":"https://cve.report/CVE-2022-42311","api":"https://cve.report/api/cve/CVE-2022-42311.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-42311","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-42311"},"summary":{"title":"CVE-2022-42311","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. 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package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-42311","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-42311","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Array","lang":""}],"nvd_cpes":[{"cve_year":"2022","cve_id":"42311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"11.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"42311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"35","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"42311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"36","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"42311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"37","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"42311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"xen","cpe5":"xen","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2022-42311","qid":"181193","title":"Debian Security Update for xen (DSA 5272-1)"},{"cve":"CVE-2022-42311","qid":"183515","title":"Debian Security Update for xen (CVE-2022-42311)"},{"cve":"CVE-2022-42311","qid":"283293","title":"Fedora Security Update for xen (FEDORA-2022-07438e12df)"},{"cve":"CVE-2022-42311","qid":"283319","title":"Fedora Security Update for xen (FEDORA-2022-99af00f60e)"},{"cve":"CVE-2022-42311","qid":"283430","title":"Fedora Security Update for xen (FEDORA-2022-9f51d13fa3)"},{"cve":"CVE-2022-42311","qid":"390275","title":"Oracle Managed Virtualization (VM) Server for x86 Security Update for xen (OVMSA-2023-0005)"},{"cve":"CVE-2022-42311","qid":"502600","title":"Alpine Linux Security Update for xen"},{"cve":"CVE-2022-42311","qid":"502619","title":"Alpine Linux Security Update for xen"},{"cve":"CVE-2022-42311","qid":"503143","title":"Alpine Linux Security Update for xen"},{"cve":"CVE-2022-42311","qid":"503695","title":"Alpine Linux Security Update for xen"},{"cve":"CVE-2022-42311","qid":"504549","title":"Alpine Linux Security Update for xen"},{"cve":"CVE-2022-42311","qid":"505964","title":"Alpine Linux Security Update for xen"},{"cve":"CVE-2022-42311","qid":"752778","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:3925-1)"},{"cve":"CVE-2022-42311","qid":"752781","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:3928-1)"},{"cve":"CVE-2022-42311","qid":"752792","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:3947-1)"},{"cve":"CVE-2022-42311","qid":"752796","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:3971-1)"},{"cve":"CVE-2022-42311","qid":"752807","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:4007-1)"},{"cve":"CVE-2022-42311","qid":"752887","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:4241-1)"},{"cve":"CVE-2022-42311","qid":"752979","title":"SUSE Enterprise Linux Security Update for xen (SUSE-SU-2022:4332-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security@xen.org","ID":"CVE-2022-42311","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"xen","version":{"version_data":[{"version_affected":"?","version_value":"consult Xen advisory XSA-326"}]}}]},"vendor_name":"Xen"}]}},"configuration":{"configuration_data":{"description":{"description_data":[{"lang":"eng","value":"All Xen versions are vulnerable.\n\nBoth Xenstore implementations (C and Ocaml) are vulnerable."}]}}},"credit":{"credit_data":{"description":{"description_data":[{"lang":"eng","value":"This issue was discovered by Julien Grall of Amazon."}]}}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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"}]},"impact":{"impact_data":{"description":{"description_data":[{"lang":"eng","value":"Unprivileged guests can cause a DoS of xenstored, resulting in the\ninability to create new guests or modify the configuration of running\nguests."}]}}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"unknown"}]}]},"references":{"reference_data":[{"url":"https://xenbits.xenproject.org/xsa/advisory-326.txt","refsource":"MISC","name":"https://xenbits.xenproject.org/xsa/advisory-326.txt"},{"refsource":"CONFIRM","name":"http://xenbits.xen.org/xsa/advisory-326.html","url":"http://xenbits.xen.org/xsa/advisory-326.html"},{"refsource":"DEBIAN","name":"DSA-5272","url":"https://www.debian.org/security/2022/dsa-5272"},{"refsource":"FEDORA","name":"FEDORA-2022-07438e12df","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/"},{"refsource":"FEDORA","name":"FEDORA-2022-99af00f60e","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/"},{"refsource":"FEDORA","name":"FEDORA-2022-9f51d13fa3","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/"}]},"workaround":{"workaround_data":{"description":{"description_data":[{"lang":"eng","value":"There is no mitigation available."}]}}}},"nvd":{"publishedDate":"2022-11-01 13:15:00","lastModifiedDate":"2023-11-07 03:53:00","problem_types":["CWE-770"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2,"impactScore":4}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}