UnratedFix available

UBUNTU-CVE-2026-44236

Type: advisorySource: OSV1 source record

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized connection.tune.frame_max value during amqp_login(), and rabbitmq-c accepts the value in amqp_login_inner() in librabbitmq/amqp_socket.c. amqp_tune_connection() in librabbitmq/amqp_connection.c uses frame_max to reallocate the outbound buffer without enforcing AMQP_FRAME_MIN_SIZE. Immediate serialization of connection.tune-ok through amqp_frame_to_bytes() writes beyond the undersized heap allocation, causing memory corruption and likely denial of service. An on-path attacker can also trigger the flaw against plaintext AMQP traffic. Code execution is theoretically possible but was not demonstrated. This issue is fixed in version 0.16.0.

Announced 11 Jun 2026Group revision 1

Original source ↗

UBUNTU-CVE-2026-44236

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-2026-44236

librabbitmq

Source reference: /affected/0/package/name

Affected versions: 0.3.0-1
Source reference: /affected/0/versions
0.4.1-1
Source reference: /affected/0/versions
0.4.1-1ubuntu0.1~esm1
Source reference: /affected/0/versions
Fixed versions: 0.4.1-1ubuntu0.1~esm2
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/1/package/name

Affected versions: 0.5.2-2
Source reference: /affected/1/versions
0.7.1-1
Source reference: /affected/1/versions
0.7.1-1ubuntu0.1
Source reference: /affected/1/versions
0.7.1-1ubuntu0.2
Source reference: /affected/1/versions
Fixed versions: 0.7.1-1ubuntu0.2+esm1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/2/package/name

Affected versions: 0.8.0-1
Source reference: /affected/2/versions
0.8.0-1build1
Source reference: /affected/2/versions
0.8.0-1ubuntu0.18.04.1
Source reference: /affected/2/versions
0.8.0-1ubuntu0.18.04.2
Source reference: /affected/2/versions
Fixed versions: 0.8.0-1ubuntu0.18.04.2+esm1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/3/package/name

Affected versions: 0.9.0-0.2
Source reference: /affected/3/versions
0.9.0-0.2ubuntu1
Source reference: /affected/3/versions
0.10.0-1
Source reference: /affected/3/versions
Fixed versions: 0.10.0-1ubuntu0.20.04.1~esm1
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/4/package/name

Affected versions: 0.10.0-1
Source reference: /affected/4/versions
0.10.0-1build1
Source reference: /affected/4/versions
0.10.0-1ubuntu1
Source reference: /affected/4/versions
0.10.0-1ubuntu2
Source reference: /affected/4/versions
Fixed versions: 0.10.0-1ubuntu2.1
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/5/package/name

Affected versions: 0.11.0-1
Source reference: /affected/5/versions
0.11.0-1build1
Source reference: /affected/5/versions
0.11.0-1build2
Source reference: /affected/5/versions
Fixed versions: 0.11.0-1ubuntu0.1
Source reference: /affected/5/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/6/package/name

Affected versions: 0.15.0-1
Source reference: /affected/6/versions
0.15.0-1build1
Source reference: /affected/6/versions
Fixed versions: 0.15.0-1ubuntu0.25.10.1
Source reference: /affected/6/ranges
Prerequisites: Not stated in this record

librabbitmq

Source reference: /affected/7/package/name

Affected versions: 0.15.0-1build1
Source reference: /affected/7/versions
0.15.0-1build2
Source reference: /affected/7/versions
Fixed versions: 0.15.0-1ubuntu0.26.04.1
Source reference: /affected/7/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
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          {
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          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=esm-infra-legacy%2Ftrusty",
      "ecosystem": "Ubuntu:Pro:14.04:LTS"
    },
    "versions": [
      "0.3.0-1",
      "0.4.1-1",
      "0.4.1-1ubuntu0.1~esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.4.1-1ubuntu0.1~esm2"
        },
        {
          "binary_name": "librabbitmq1",
          "binary_version": "0.4.1-1ubuntu0.1~esm2"
        }
      ],
      "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
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          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=esm-apps-legacy%2Fxenial",
      "ecosystem": "Ubuntu:Pro:16.04:LTS"
    },
    "versions": [
      "0.5.2-2",
      "0.7.1-1",
      "0.7.1-1ubuntu0.1",
      "0.7.1-1ubuntu0.2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.7.1-1ubuntu0.2+esm1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.7.1-1ubuntu0.2+esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.8.0-1ubuntu0.18.04.2+esm1"
          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=esm-apps%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "versions": [
      "0.8.0-1",
      "0.8.0-1build1",
      "0.8.0-1ubuntu0.18.04.1",
      "0.8.0-1ubuntu0.18.04.2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.8.0-1ubuntu0.18.04.2+esm1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.8.0-1ubuntu0.18.04.2+esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.10.0-1ubuntu0.20.04.1~esm1"
          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=esm-infra%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "versions": [
      "0.9.0-0.2",
      "0.9.0-0.2ubuntu1",
      "0.10.0-1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.10.0-1ubuntu0.20.04.1~esm1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.10.0-1ubuntu0.20.04.1~esm1"
        }
      ],
      "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.10.0-1ubuntu2.1"
          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=jammy",
      "ecosystem": "Ubuntu:22.04:LTS"
    },
    "versions": [
      "0.10.0-1",
      "0.10.0-1build1",
      "0.10.0-1ubuntu1",
      "0.10.0-1ubuntu2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.10.0-1ubuntu2.1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.10.0-1ubuntu2.1"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.11.0-1ubuntu0.1"
          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=noble",
      "ecosystem": "Ubuntu:24.04:LTS"
    },
    "versions": [
      "0.11.0-1",
      "0.11.0-1build1",
      "0.11.0-1build2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.11.0-1ubuntu0.1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.11.0-1ubuntu0.1"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.15.0-1ubuntu0.25.10.1"
          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=questing",
      "ecosystem": "Ubuntu:25.10"
    },
    "versions": [
      "0.15.0-1",
      "0.15.0-1build1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.15.0-1ubuntu0.25.10.1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.15.0-1ubuntu0.25.10.1"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.15.0-1ubuntu0.26.04.1"
          }
        ]
      }
    ],
    "package": {
      "name": "librabbitmq",
      "purl": "pkg:deb/ubuntu/librabbitmq?arch=source&distro=resolute",
      "ecosystem": "Ubuntu:26.04:LTS"
    },
    "versions": [
      "0.15.0-1build1",
      "0.15.0-1build2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44236.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "amqp-tools",
          "binary_version": "0.15.0-1ubuntu0.26.04.1"
        },
        {
          "binary_name": "librabbitmq4",
          "binary_version": "0.15.0-1ubuntu0.26.04.1"
        }
      ],
      "availability": "No subscription required"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #5769 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 22:13:42 GMT
Publisher date: Thu, 11 Jun 2026 00:00:00 GMT

Read the original announcement

Revision history

24 Oct 2026UBUNTU-CVE-2026-44236 · Revision 1Source updated