UBUNTU-CVE-2026-71418

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Source
https://ubuntu.com/security/CVE-2026-71418
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71418.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-71418
Upstream
Published
2026-09-21T00:00:00Z
Modified
2026-09-21T21:40:10Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 processing in rust/src/http2/http2.rs retains previously processed HTTP/2 DATA frame contents instead of clearing the internal buffer. Multiple DATA frames with the EndOfStream flag set can grow the buffer to its 65 KiB limit while causing all prior contents to be processed again, producing quadratic CPU complexity, degraded packet processing, loss of monitoring visibility, or denial of service. This issue is fixed in version 8.0.6.

References

Affected packages

Ubuntu:16.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.8-1build1
2.0.9-1
2.0.10-1
2.0.10-2
2.0.11-1
3.*
3.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "suricata",
            "binary_version":  "3.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71418.json"

Ubuntu:18.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.2-2ubuntu3

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71418.json"

Ubuntu:22.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:6.*
1:6.0.4-2
1:6.0.4-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "suricata",
            "binary_version":  "1:6.0.4-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71418.json"

Ubuntu:24.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:7.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "suricata",
            "binary_version":  "1:7.0.3-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71418.json"

Ubuntu:26.04:LTS / suricata

Package

Name
suricata
Purl
pkg:deb/ubuntu/suricata?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:7.*
1:7.0.10-1
1:8.*
1:8.0.1-3build1
1:8.0.2-1
1:8.0.2-1build1
1:8.0.3-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "suricata",
            "binary_version":  "1:8.0.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71418.json"