{"id":"CVE-2026-57224","aliases":["DEBIAN-CVE-2026-57224","EUVD-2026-83382","GHSA-m2vc-g65c-ph7m","UBUNTU-CVE-2026-57224","openSUSE-SU-2026:11308-1"],"status":"published","title":"Suricata dhcp: unbounded transactions in unidirectional traffic can lead to resource exhaustion","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00408,"percentile":0.35611,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-770"],"published":"2026-07-18T00:00:00Z","modified":"2026-10-28T02:30:25Z","fixes":[{"ecosystem":"Debian:14","package":"suricata","fixed_in":["1:8.0.6-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10-1","1:7.0.10-1+deb13u1","1:7.0.10-1+deb13u2","1:7.0.10-1+deb13u3","1:7.0.10-1+deb13u4","1:7.0.11-1","1:7.0.11-1~bpo13+1","1:8.0.0-1~exp1","1:8.0.0-1~exp2","1:8.0.0-1~exp4","1:8.0.0-1~exp5","1:8.0.1-1","1:8.0.1-2","1:8.0.1-3","1:8.0.1-3~bpo13+1","1:8.0.2-1","1:8.0.2-1~bpo13+1","1:8.0.3-1","1:8.0.3-1~bpo13+1","1:8.0.3-2~exp1","1:8.0.4-1","1:8.0.4-1~bpo13+1","1:8.0.5-1","1:8.0.5-1~bpo13+1","1:8.0.6-1","1:8.0.6-1~bpo13+1","1:8.0.7-1","1:8.0.7-1~bpo13+1","1:8.0.7-2~exp1"]},{"source":"osv","ecosystem":"Debian:14","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0.6-1"}]}],"versions":["1:7.0.10-1","1:7.0.11-1","1:7.0.11-1~bpo13+1","1:8.0.0-1~exp1","1:8.0.0-1~exp2","1:8.0.0-1~exp4","1:8.0.0-1~exp5","1:8.0.1-1","1:8.0.1-2","1:8.0.1-3","1:8.0.1-3~bpo13+1","1:8.0.2-1","1:8.0.2-1~bpo13+1","1:8.0.3-1","1:8.0.3-1~bpo13+1","1:8.0.3-2~exp1","1:8.0.4-1","1:8.0.4-1~bpo13+1","1:8.0.5-1","1:8.0.5-1~bpo13+1","1:8.0.6-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.8-1build1","2.0.9-1","2.0.10-1","2.0.10-2","2.0.11-1","3.0-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2-2ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:6.0.4-2","1:6.0.4-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.0-2","1:7.0.2-1","1:7.0.2-1build1","1:7.0.3-1build1","1:7.0.3-1build3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10-1","1:8.0.1-3build1","1:8.0.2-1","1:8.0.2-1build1","1:8.0.3-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.6-1.1"}]}],"bundled":5}],"products":[{"vendor":"oisf","product":"suricata"}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-m2vc-g65c-ph7m","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","report"]},{"url":"https://github.com/OISF/suricata/pull/15740","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://github.com/OISF/suricata/releases/tag/suricata-8.0.6","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8621","tags":["x_refsource_MISC","Permissions Required","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57224.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57224","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-57224","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-57224","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-57224","tags":["report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8622","tags":["report"]},{"url":"https://github.com/OISF/suricata/commit/f234d155bcf43df403ee0823b60de8d02e2b99b2","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57222","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57224","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57227","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57228","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57229","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-57224","title":"Suricata dhcp: unbounded transactions in unidirectional traffic can lead to resource exhaustion","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","status":"published","published":"2026-09-18T20:08:46.402Z","modified":"2026-09-18T20:22:23.977Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-83382","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","status":"published","published":"2026-09-18T20:08:46Z","modified":"2026-09-18T20:22:23Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T17:28:06.992666Z"}],"nvd":[{"id":"CVE-2026-57224","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","status":"published","published":"2026-09-18T20:17:17.78Z","modified":"2026-09-28T18:36:45.227Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:12:50.043898Z"}],"osv":[{"id":"CVE-2026-57224","title":"Suricata dhcp: unbounded transactions in unidirectional traffic can lead to resource exhaustion","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","status":"published","published":"2026-09-18T20:08:46.402Z","modified":"2026-10-28T02:30:25.74598041Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T15:45:12.016252Z"},{"id":"DEBIAN-CVE-2026-57224","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","status":"published","published":"2026-09-18T20:17:17.78Z","modified":"2026-09-29T08:47:21.763631241Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"UBUNTU-CVE-2026-57224","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. This issue is fixed in version 8.0.6.","status":"published","published":"2026-09-18T20:17:00Z","modified":"2026-09-24T02:00:25.918376762Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:41.911783Z"},{"id":"openSUSE-SU-2026:11308-1","title":"libsuricata8_0_6-8.0.6-1.1 on GA media","description":"These are all security issues fixed in the libsuricata8_0_6-8.0.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-07-18T00:00:00Z","modified":"2026-07-19T13:15:06.593507959Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}