Medium
Security advisory
An issue was discovered in GoBGP before 3.35.0. pkg/packet/mrt/mrt.go does not properly check the input length, e.g., by ensuring that there are 12 bytes or 36 bytes (depending on the address family).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-43970
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 03:48 UTC · Revision 1
Source evidence
An issue was discovered in GoBGP before 3.35.0. pkg/packet/mrt/mrt.go does not properly check the input length, e.g., by ensuring that there are 12 bytes or 36 bytes (depending on the address family).
osv:CVE-2025-43970
Complete source record
{
"id": "ebe0b5f7e409d9b1991ec1751680c42d5957ff5a07e26aa03abd66c90b0ed68b",
"url": "https://osv.dev/vulnerability/CVE-2025-43970",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-43970",
"summary": "An issue was discovered in GoBGP before 3.35.0. pkg/packet/mrt/mrt.go does not properly check the input length, e.g., by ensuring that there are 12 bytes or 36 bytes (depending on the address family).",
"evidence": "osv:CVE-2025-43970",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-43970",
"aliases": [
"CVE-2025-43970",
"GHSA-hqhq-hp5x-xp3w",
"GO-2025-3630"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/osrg/gobgp",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "5365453707a9f9bcbeb2cc4cff24803ffcc9bbaa"
},
{
"fixed": "5153bafbe8dbe1a2f02a70bbf0365e98b80e47b0"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.35.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "5153bafbe8dbe1a2f02a70bbf0365e98b80e47b0"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v3.34.0",
"v3.33.0",
"v3.32.0",
"v3.31.0",
"v3.30.0",
"v3.29.0",
"v3.28.0",
"v3.27.0",
"v3.26.0",
"v3.25.0",
"v3.24.0",
"v3.23.0",
"v3.22.0",
"v3.21.0",
"v3.20.0",
"v3.19.0",
"v3.17.0",
"v3.16.0",
"v3.15.0",
"v3.14.0",
"v3.13.0",
"v3.12.0",
"v3.11.0",
"v3.10.0",
"v3.9.0",
"v3.8.0",
"v3.7.0",
"v3.6.0",
"v3.5.0",
"v3.4.0",
"v3.3.0",
"v3.2.0",
"v3.1.0",
"v3.0.0",
"v3.0.0-rc4",
"v3.0.0-rc3",
"v3.0.0-rc2",
"v3.0.0-rc1",
"v2.34.0",
"v2.33.0",
"v2.32.0",
"v2.31.0",
"v2.30.0",
"v2.29.0",
"v2.28.0",
"v2.27.0",
"v2.26.0",
"v2.25.0",
"v2.24.0",
"v2.23.0",
"v2.22.0",
"v2.21.0",
"v2.20.0",
"v2.19.0",
"v2.18.0",
"v2.17.0",
"v2.16.0",
"v2.15.0",
"v2.14.0",
"v2.13.0",
"v2.12.0",
"v2.11.0",
"v2.10.0",
"v2.9.0",
"v2.8.0",
"v2.7.0",
"v2.6.0",
"v2.5.0",
"v2.4.0",
"v2.3.0",
"v2.2.0",
"v2.1.0",
"v2.0.0",
"v1.33",
"v1.32",
"v1.31",
"v1.30",
"v1.29",
"v1.28",
"v1.27",
"v1.26",
"v1.25",
"v1.24",
"v1.23",
"v1.22",
"v1.21",
"v1.20",
"v1.19",
"v1.18",
"v1.17",
"v1.16",
"v1.15",
"v1.14",
"v1.13",
"v1.12",
"v1.11",
"v1.10",
"v1.9",
"v1.8",
"v1.7",
"v1.6",
"v1.5",
"v1.4",
"v1.3",
"v1.2",
"v1.1",
"v1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-43970.json"
}
}
],
"modified": "2026-10-28T02:30:46.803384107Z",
"provider": "osv",
"references": [
"https://github.com/osrg/gobgp/compare/v3.34.0...v3.35.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/43xxx/CVE-2025-43970.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-43970",
"https://github.com/osrg/gobgp/commit/5153bafbe8dbe1a2f02a70bbf0365e98b80e47b0"
],
"provider_metadata": {
"cwe_ids": [
"CWE-1284"
],
"cna_assigner": "mitre",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/43xxx/CVE-2025-43970.json"
}
},
"related_cves": [
{
"value": "CVE-2025-43970",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 514529,
"published_at": "2025-04-21T00:00:00+00:00"
}