{"schemaVersion":3,"id":"CVE-2026-22264","aliases":["UBUNTU-CVE-2026-22264","DEBIAN-CVE-2026-22264"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-01-27T18:33:50.354Z","modified":"2026-01-28T14:02:38.233Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.1,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.4,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":9.1,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","exploitability":10,"impact":8.7,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"debian","product":"suricata","name":"suricata","label":"suricata","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/suricata","purlType":"deb","versions":[{"text":"< 1:7.0.10-1+deb13u3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:8.0.3-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:7.0.10-1+deb13u3 | < 1:8.0.3-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"suricata","name":"suricata","label":"suricata","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/suricata","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"oisf","product":"suricata","name":"suricata","label":"suricata","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 7.0.14","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.0.0, < 8.0.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.0.14 | ≥ 8.0.0, < 8.0.3","eol":null,"hubHref":"/vendor/oisf/suricata"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5","label":"github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","Vendor Advisory"]},{"url":"https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715","label":"github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715","hostname":"github.com","tags":["X Refsource MISC","REPORT","Patch"]},{"url":"https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2","label":"github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2","hostname":"github.com","tags":["X Refsource MISC","REPORT","Patch"]},{"url":"https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b","label":"github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b","hostname":"github.com","tags":["X Refsource MISC","REPORT","Patch"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8190","label":"redmine.openinfosecfoundation.org/issues/8190","hostname":"redmine.openinfosecfoundation.org","tags":["X Refsource MISC","REPORT","Permissions Required"]},{"url":"https://ubuntu.com/security/CVE-2026-22264","label":"ubuntu.com/security/CVE-2026-22264","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-22264","label":"www.cve.org/CVERecord?id=CVE-2026-22264","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-22264","label":"security-tracker.debian.org/tracker/CVE-2026-22264","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:10082-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:10082-1"]},"timeline":[{"kind":"published","date":"2026-01-27T18:33:50.354Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-01-28T14:02:38.233Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T12:23:33.332Z","stale":false,"partial":false}}