Unrated

UBUNTU-CVE-2026-71855

Type: advisorySource: OSV1 source record

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, src/flow-hash.c can treat an IPv4 and IPv6 flow as equal without comparing the IP family when their raw address words, ports, protocol, VLAN, recursion level, live device, and hash bucket align. An IPv6 packet can therefore reuse IPv4 flow state or the reverse, causing incorrect flowbit state, detection bypass, or IP-only bypass. This issue is fixed in versions 8.0.6 and 7.0.17.

Announced 18 Sept 2026Group revision 1

Original source ↗

UBUNTU-CVE-2026-71855

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2026-71855

suricata

Source reference: /affected/0/package/name

Affected versions: 2.0.8-1build1
Source reference: /affected/0/versions
2.0.9-1
Source reference: /affected/0/versions
2.0.10-1
Source reference: /affected/0/versions
2.0.10-2
Source reference: /affected/0/versions
2.0.11-1
Source reference: /affected/0/versions
3.0-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

suricata

Source reference: /affected/1/package/name

Affected versions: 3.2-2ubuntu3
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

suricata

Source reference: /affected/2/package/name

Affected versions: 1:6.0.4-2
Source reference: /affected/2/versions
1:6.0.4-3
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

suricata

Source reference: /affected/3/package/name

Affected versions: 1:7.0.0-2
Source reference: /affected/3/versions
1:7.0.2-1
Source reference: /affected/3/versions
1:7.0.2-1build1
Source reference: /affected/3/versions
1:7.0.3-1build1
Source reference: /affected/3/versions
1:7.0.3-1build3
Source reference: /affected/3/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

suricata

Source reference: /affected/4/package/name

Affected versions: 1:7.0.10-1
Source reference: /affected/4/versions
1:8.0.1-3build1
Source reference: /affected/4/versions
1:8.0.2-1
Source reference: /affected/4/versions
1:8.0.2-1build1
Source reference: /affected/4/versions
1:8.0.3-1
Source reference: /affected/4/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "suricata",
      "purl": "pkg:deb/ubuntu/suricata?arch=source&distro=xenial",
      "ecosystem": "Ubuntu:16.04:LTS"
    },
    "versions": [
      "2.0.8-1build1",
      "2.0.9-1",
      "2.0.10-1",
      "2.0.10-2",
      "2.0.11-1",
      "3.0-1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71855.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "suricata",
          "binary_version": "3.0-1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "suricata",
      "purl": "pkg:deb/ubuntu/suricata?arch=source&distro=bionic",
      "ecosystem": "Ubuntu:18.04:LTS"
    },
    "versions": [
      "3.2-2ubuntu3"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71855.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "libhtp-0.5.23-1",
          "binary_version": "3.2-2ubuntu3"
        },
        {
          "binary_name": "suricata",
          "binary_version": "3.2-2ubuntu3"
        },
        {
          "binary_name": "suricata-hyperscan",
          "binary_version": "3.2-2ubuntu3"
        },
        {
          "binary_name": "suricata-oinkmaster",
          "binary_version": "3.2-2ubuntu3"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "suricata",
      "purl": "pkg:deb/ubuntu/suricata?arch=source&distro=jammy",
      "ecosystem": "Ubuntu:22.04:LTS"
    },
    "versions": [
      "1:6.0.4-2",
      "1:6.0.4-3"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71855.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "suricata",
          "binary_version": "1:6.0.4-3"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "suricata",
      "purl": "pkg:deb/ubuntu/suricata?arch=source&distro=noble",
      "ecosystem": "Ubuntu:24.04:LTS"
    },
    "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"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71855.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "suricata",
          "binary_version": "1:7.0.3-1build3"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "suricata",
      "purl": "pkg:deb/ubuntu/suricata?arch=source&distro=resolute",
      "ecosystem": "Ubuntu:26.04:LTS"
    },
    "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"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71855.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "suricata",
          "binary_version": "1:8.0.3-1"
        }
      ]
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #32239 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 08:46:26 GMT
Publisher date: Fri, 18 Sep 2026 21:18:00 GMT

Read the original announcement

Revision history

25 Oct 2026UBUNTU-CVE-2026-71855 · Revision 1Source updated