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UBUNTU-CVE-2026-83603

Type: advisorySource: OSV1 source record

Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.

Announced 22 Sept 2026Group revision 1

Original source ↗

UBUNTU-CVE-2026-83603

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-2026-83603

netdata

Source reference: /affected/0/package/name

Affected versions: 1.7.0+dfsg-1
Source reference: /affected/0/versions
1.8.0+dfsg-1
Source reference: /affected/0/versions
1.9.0+dfsg-1
Source reference: /affected/0/versions
1.9.0+dfsg-1ubuntu0.1~esm1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netdata

Source reference: /affected/1/package/name

Affected versions: 1.16.1-2
Source reference: /affected/1/versions
1.19.0-3ubuntu1
Source reference: /affected/1/versions
1.19.0-3ubuntu1+esm1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netdata

Source reference: /affected/2/package/name

Affected versions: 1.29.3-4
Source reference: /affected/2/versions
1.31.0-4
Source reference: /affected/2/versions
1.33.1-1ubuntu1
Source reference: /affected/2/versions
1.33.1-1ubuntu1+esm1
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

netdata

Source reference: /affected/3/package/name

Affected versions: 1.42.1-1
Source reference: /affected/3/versions
1.43.1-1
Source reference: /affected/3/versions
1.43.2-1
Source reference: /affected/3/versions
1.43.2-1build1
Source reference: /affected/3/versions
1.43.2-1build2
Source reference: /affected/3/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": "netdata",
      "purl": "pkg:deb/ubuntu/netdata?arch=source&distro=esm-apps%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "versions": [
      "1.7.0+dfsg-1",
      "1.8.0+dfsg-1",
      "1.9.0+dfsg-1",
      "1.9.0+dfsg-1ubuntu0.1~esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83603.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "netdata",
          "binary_version": "1.9.0+dfsg-1ubuntu0.1~esm1"
        },
        {
          "binary_name": "netdata-data",
          "binary_version": "1.9.0+dfsg-1ubuntu0.1~esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netdata",
      "purl": "pkg:deb/ubuntu/netdata?arch=source&distro=esm-apps%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "versions": [
      "1.16.1-2",
      "1.19.0-3ubuntu1",
      "1.19.0-3ubuntu1+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83603.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "netdata",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-apache2",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-core",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-plugins-bash",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-plugins-nodejs",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-plugins-python",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-web",
          "binary_version": "1.19.0-3ubuntu1+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netdata",
      "purl": "pkg:deb/ubuntu/netdata?arch=source&distro=esm-apps%2Fjammy",
      "ecosystem": "Ubuntu:Pro:22.04:LTS"
    },
    "versions": [
      "1.29.3-4",
      "1.31.0-4",
      "1.33.1-1ubuntu1",
      "1.33.1-1ubuntu1+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83603.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "netdata",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-apache2",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-core",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-plugins-bash",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-plugins-nodejs",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-plugins-python",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        },
        {
          "binary_name": "netdata-web",
          "binary_version": "1.33.1-1ubuntu1+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "netdata",
      "purl": "pkg:deb/ubuntu/netdata?arch=source&distro=noble",
      "ecosystem": "Ubuntu:24.04:LTS"
    },
    "versions": [
      "1.42.1-1",
      "1.43.1-1",
      "1.43.2-1",
      "1.43.2-1build1",
      "1.43.2-1build2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83603.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "netdata",
          "binary_version": "1.43.2-1build2"
        },
        {
          "binary_name": "netdata-apache2",
          "binary_version": "1.43.2-1build2"
        },
        {
          "binary_name": "netdata-core",
          "binary_version": "1.43.2-1build2"
        },
        {
          "binary_name": "netdata-plugins-bash",
          "binary_version": "1.43.2-1build2"
        },
        {
          "binary_name": "netdata-plugins-python",
          "binary_version": "1.43.2-1build2"
        },
        {
          "binary_name": "netdata-web",
          "binary_version": "1.43.2-1build2"
        }
      ]
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #5820 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 22:15:22 GMT
Publisher date: Tue, 22 Sep 2026 17:17:00 GMT

Read the original announcement

Revision history

24 Oct 2026UBUNTU-CVE-2026-83603 · Revision 1Source updated