UnratedFix available

DEBIAN-CVE-2026-7736

Type: advisorySource: OSV1 source record

A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.

Announced 4 May 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-7736

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:DEBIAN-CVE-2026-7736

gobgp

Source reference: /affected/0/package/name

Affected versions: 3.10.0-1
Source reference: /affected/0/versions
3.16.0-1
Source reference: /affected/0/versions
3.19.0-1
Source reference: /affected/0/versions
3.21.0-1
Source reference: /affected/0/versions
3.23.0-1
Source reference: /affected/0/versions
3.25.0-1
Source reference: /affected/0/versions
3.27.0-1
Source reference: /affected/0/versions
3.28.0-1
Source reference: /affected/0/versions
3.29.0-1
Source reference: /affected/0/versions
3.30.0-1
Source reference: /affected/0/versions
3.31.0-1
Source reference: /affected/0/versions
3.32.0-1
Source reference: /affected/0/versions
3.33.0-1
Source reference: /affected/0/versions
3.35.0-1
Source reference: /affected/0/versions
3.36.0-1
Source reference: /affected/0/versions
3.36.0-2
Source reference: /affected/0/versions
4.3.0-1
Source reference: /affected/0/versions
4.4.0-1
Source reference: /affected/0/versions
4.5.0-1
Source reference: /affected/0/versions
4.5.0-1~bpo13+1
Source reference: /affected/0/versions
4.6.0-1
Source reference: /affected/0/versions
4.6.0-2
Source reference: /affected/0/versions
4.6.0-2~bpo13+1
Source reference: /affected/0/versions
4.7.0-1
Source reference: /affected/0/versions
4.7.0-1~bpo13+1
Source reference: /affected/0/versions
4.8.0-1
Source reference: /affected/0/versions
4.8.0-2~exp1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gobgp

Source reference: /affected/1/package/name

Affected versions: 3.36.0-2
Source reference: /affected/1/versions
4.3.0-1
Source reference: /affected/1/versions
4.4.0-1
Source reference: /affected/1/versions
4.5.0-1
Source reference: /affected/1/versions
4.5.0-1~bpo13+1
Source reference: /affected/1/versions
4.6.0-1
Source reference: /affected/1/versions
4.6.0-2
Source reference: /affected/1/versions
4.6.0-2~bpo13+1
Source reference: /affected/1/versions
4.7.0-1
Source reference: /affected/1/versions
4.7.0-1~bpo13+1
Source reference: /affected/1/versions
4.8.0-1
Source reference: /affected/1/versions
4.8.0-2~exp1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

gobgp

Source reference: /affected/2/package/name

Affected versions: 3.36.0-2
Source reference: /affected/2/versions
4.3.0-1
Source reference: /affected/2/versions
Fixed versions: 4.4.0-1
Source reference: /affected/2/ranges
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": "gobgp",
      "purl": "pkg:deb/debian/gobgp?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.10.0-1",
      "3.16.0-1",
      "3.19.0-1",
      "3.21.0-1",
      "3.23.0-1",
      "3.25.0-1",
      "3.27.0-1",
      "3.28.0-1",
      "3.29.0-1",
      "3.30.0-1",
      "3.31.0-1",
      "3.32.0-1",
      "3.33.0-1",
      "3.35.0-1",
      "3.36.0-1",
      "3.36.0-2",
      "4.3.0-1",
      "4.4.0-1",
      "4.5.0-1",
      "4.5.0-1~bpo13+1",
      "4.6.0-1",
      "4.6.0-2",
      "4.6.0-2~bpo13+1",
      "4.7.0-1",
      "4.7.0-1~bpo13+1",
      "4.8.0-1",
      "4.8.0-2~exp1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7736.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "gobgp",
      "purl": "pkg:deb/debian/gobgp?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.36.0-2",
      "4.3.0-1",
      "4.4.0-1",
      "4.5.0-1",
      "4.5.0-1~bpo13+1",
      "4.6.0-1",
      "4.6.0-2",
      "4.6.0-2~bpo13+1",
      "4.7.0-1",
      "4.7.0-1~bpo13+1",
      "4.8.0-1",
      "4.8.0-2~exp1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7736.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.4.0-1"
          }
        ]
      }
    ],
    "package": {
      "name": "gobgp",
      "purl": "pkg:deb/debian/gobgp?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.36.0-2",
      "4.3.0-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-7736.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58478 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 18:06:19 GMT
Publisher date: Mon, 04 May 2026 07:16:01 GMT

Read the original announcement