{"id":"CVE-2026-22264","state":"PUBLISHED","title":"Suricata detect/alert: heap-use-after-free on alert queue expansion","description":"Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.","publishedAt":"2026-01-27T18:33:50.354Z","updatedAt":"2026-01-28T14:02:38.233Z","severity":{"score":7.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["OISF suricata"],"affected":[{"vendor":"OISF","product":"suricata","versions":[{"version":"< 7.0.14","status":"affected"},{"version":">= 8.0.0, < 8.0.3","status":"affected"}]}],"references":["https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5","https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715","https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2","https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b","https://redmine.openinfosecfoundation.org/issues/8190"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/22xxx/CVE-2026-22264.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-22264","state":"PUBLISHED","datePublished":"2026-01-27T18:33:50.354Z","dateUpdated":"2026-01-28T14:02:38.233Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-07T05:19:12.923Z"},"containers":{"cna":{"title":"Suricata detect/alert: heap-use-after-free on alert queue expansion","descriptions":[{"lang":"en","value":"Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet."}],"affected":[{"vendor":"OISF","product":"suricata","versions":[{"version":"< 7.0.14","status":"affected"},{"version":">= 8.0.0, < 8.0.3","status":"affected"}]}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5","name":"https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715","name":"https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715","tags":["x_refsource_MISC"]},{"url":"https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2","name":"https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2","tags":["x_refsource_MISC"]},{"url":"https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b","name":"https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b","tags":["x_refsource_MISC"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8190","name":"https://redmine.openinfosecfoundation.org/issues/8190","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","description":"CWE-416: Use After Free","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-27T18:33:50.354Z"},"source":{"advisory":"GHSA-mqr8-m3m4-2hw5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-28T14:02:26.152409Z","id":"CVE-2026-22264","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-28T14:02:38.233Z"}}]}}}