CVE-2026-22264 (GCVE-0-2026-22264)

Vulnerability from cvelistv5 – Published: 2026-01-27 18:33 – Updated: 2026-01-27 18:33
VLAI?
Title
Suricata detect/alert: heap-use-after-free on alert queue expansion
Summary
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.
Severity ?
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
OISF suricata Affected: < 7.0.14
Affected: >= 8.0.0, < 8.0.3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "suricata",
          "vendor": "OISF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.0.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.3"
            }
          ]
        }
      ],
      "descriptions": [
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          "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."
        }
      ],
      "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",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-27T18:33:50.354Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5"
        },
        {
          "name": "https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715"
        },
        {
          "name": "https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2"
        },
        {
          "name": "https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b"
        },
        {
          "name": "https://redmine.openinfosecfoundation.org/issues/8190",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://redmine.openinfosecfoundation.org/issues/8190"
        }
      ],
      "source": {
        "advisory": "GHSA-mqr8-m3m4-2hw5",
        "discovery": "UNKNOWN"
      },
      "title": "Suricata detect/alert: heap-use-after-free on alert queue expansion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22264",
    "datePublished": "2026-01-27T18:33:50.354Z",
    "dateReserved": "2026-01-07T05:19:12.923Z",
    "dateUpdated": "2026-01-27T18:33:50.354Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-22264\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-01-27T19:16:14.640\",\"lastModified\":\"2026-01-27T19:16:14.640\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"references\":[{\"url\":\"https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://redmine.openinfosecfoundation.org/issues/8190\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.