{"id":"CVE-2026-22264","summary":"Suricata detect/alert: heap-use-after-free on alert queue expansion","details":"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.","aliases":["GHSA-mqr8-m3m4-2hw5"],"modified":"2026-08-12T15:31:38.975001Z","published":"2026-01-27T18:33:50.354Z","related":["openSUSE-SU-2026:10082-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-416"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22264.json"},"references":[{"type":"WEB","url":"https://redmine.openinfosecfoundation.org/issues/8190"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22264.json"},{"type":"ADVISORY","url":"https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22264"},{"type":"FIX","url":"https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715"},{"type":"FIX","url":"https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2"},{"type":"FIX","url":"https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/oisf/suricata","events":[{"introduced":"0"},{"fixed":"163bd652dfa92959e918a952429b939fa81f7b88"},{"introduced":"9956286fb89f9cad9e9f95b99dc751f8666617b7"},{"fixed":"3bd9f773bdc65d7bede2f0576790a68fb68b7476"},{"fixed":"549d7bf60616de8e54686a188196453b5b22f715"},{"fixed":"5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2"},{"fixed":"ac1eb394181530430fb7262969f423a1bf8f209b"}],"database_specific":{"cpe":"cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"7.0.14"},{"introduced":"8.0.0"},{"fixed":"8.0.3"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["suricata-8.0.2","suricata-7.0.13","suricata-7.0.12","suricata-8.0.1","suricata-8.0.0","suricata-7.0.11","suricata-7.0.10","suricata-7.0.9","suricata-7.0.8","suricata-7.0.7","suricata-7.0.6","suricata-7.0.5","suricata-7.0.4","suricata-7.0.3","suricata-7.0.2","suricata-7.0.1","suricata-7.0.0","suricata-7.0.0-rc2","suricata-7.0.0-rc1","suricata-7.0.0-beta1","suricata-6.0.1","suricata-6.0.0","suricata-6.0.0-rc1","suricata-6.0.0-beta1","suricata-5.0.1","suricata-5.0.0","suricata-5.0.0-rc1","suricata-5.0.0-beta1","suricata-4.1.2","suricata-4.1.1","suricata-4.1.0","suricata-4.1.0-rc2","suricata-4.1.0-rc1","suricata-4.1.0-beta1","suricata-4.0.1","suricata-4.0.0","suricata-4.0.0-rc2","suricata-4.0.0-rc1","suricata-4.0.0-beta1","suricata-3.2.1","suricata-3.2","suricata-3.2RC1","suricata-3.2beta1","suricata-3.1.2","suricata-3.1.1","suricata-3.1","suricata-3.0.1","suricata-3.1RC1","suricata-3.0.1RC1","suricata-3.0","suricata-3.0RC3","suricata-3.0RC2","suricata-3.0RC1","suricata-2.1beta4","suricata-2.1beta3","suricata-2.1beta2","suricata-2.1beta1","suricata-2.0.2","suricata-2.0.1","suricata-2.0.1rc1","suricata-2.0","suricata-2.0rc3","suricata-2.0rc2","suricata-2.0rc1","suricata-2.0beta2","suricata-2.0beta1","suricata-1.4","suricata-1.4rc1","suricata-1.4beta3","suricata-1.4beta2","suricata-1.4beta1","suricata-1.3.1","suricata-1.3","suricata-1.3rc1","suricata-1.3beta2","suricata-1.3beta1","suricata-1.2.1","suricata-1.2","suricata-1.2rc1","suricata-1.2beta1","suricata-1.1","suricata-1.1rc1","suricata-1.1beta3","suricata-1.1beta2","suricata-1.1beta1","suricata-1.0.2","suricata-1.0.1","suricata-1.0.0","suricata-0.8.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22264.json","vanir_signatures_modified":"2026-08-12T15:31:38Z","vanir_signatures":[{"signature_type":"Function","signature_version":"v1","source":"https://github.com/oisf/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2","target":{"file":"src/detect-engine-alert.c","function":"AlertQueueExpand"},"deprecated":false,"digest":{"length":632,"function_hash":"220388116050071974834251253798595150715"},"id":"CVE-2026-22264-09f84eb5"},{"deprecated":false,"digest":{"function_hash":"220388116050071974834251253798595150715","length":632},"id":"CVE-2026-22264-78a4ee45","signature_type":"Function","signature_version":"v1","source":"https://github.com/oisf/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715","target":{"file":"src/detect-engine-alert.c","function":"AlertQueueExpand"}},{"deprecated":false,"digest":{"line_hashes":["243318784497944403852614724009784700844","123920765186006667901463276368807113422","141228771370806781259157356128520839147","273788639568975433281074483163181540934","200834822248267216472452673087695021786","307279113319920512626166616990792104538","18198949829810559732235514597341131176","44107252513249284182459161533000765010","51410176130097310889585856310677363733","123321839734904507382219264804267680029","76646563018386585864914465955855986373","338885874309443754752084883328411337491","284487570610236081930768481822286368363","38286402152093930042822435801444281707","259299691807283596830834792966526488749","101014606399480382130593981425901913067","78062899674243063249111462958528328692"],"threshold":0.9},"id":"CVE-2026-22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