Critical
iperf3 — security advisory
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).
- Products
- iperf3
- Affected versions
- 3.0.11-1, 3.0.11-1ubuntu0.1~esm1, 3.0.11-1ubuntu0.1~esm2, 3.14-1, 3.15-1, 3.16-1, 3.16-1build1, 3.16-1build2, 3.16-1ubuntu0.1~esm1, 3.18-2, 3.18-2ubuntu0.1, 3.19.1-2, 3.20-2, 3.20-2.1, 3.20-2.1build1, 3.6-2, 3.7-1, 3.7-2, 3.7-3, 3.7-3ubuntu0.1~esm1, 3.7-3ubuntu0.1~esm2, 3.9-1, 3.9-1+deb11u1build0.22.04.1, 3.9-1+deb11u1ubuntu0.1, 3.9-1+deb11u1ubuntu0.1~esm1, 3.9-1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-54351
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:29 UTC · Revision 1
Source evidence
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).
osv:UBUNTU-CVE-2025-54351
iperf3
Fixed versions: Not specified
iperf3
Fixed versions: Not specified
iperf3
Fixed versions: Not specified
iperf3
Fixed versions: Not specified
iperf3
Fixed versions: Not specified
iperf3
Fixed versions: Not specified
iperf3
Fixed versions: Not specified
Complete source record
{
"id": "6e75bf1561e64b3f799ff439823f68466d47f2980147e8a36e396a09642bec2d",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-54351",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-54351",
"summary": "In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).",
"evidence": "osv:UBUNTU-CVE-2025-54351",
"products": [
{
"name": {
"value": "iperf3",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.0.11-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.11-1ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.11-1ubuntu0.1~esm2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
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"affected_versions": [
{
"value": "3.6-2",
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},
{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
"value": "3.7-3",
"evidence": "/affected/1/versions"
},
{
"value": "3.7-3ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
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"evidence": "/affected/2/versions"
},
{
"value": "3.9-1build1",
"evidence": "/affected/2/versions"
},
{
"value": "3.9-1+deb11u1build0.22.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "3.9-1+deb11u1ubuntu0.1~esm1",
"evidence": "/affected/2/versions"
},
{
"value": "3.9-1+deb11u1ubuntu0.1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "iperf3",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.14-1",
"evidence": "/affected/3/versions"
},
{
"value": "3.15-1",
"evidence": "/affected/3/versions"
},
{
"value": "3.16-1",
"evidence": "/affected/3/versions"
},
{
"value": "3.16-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "3.16-1build2",
"evidence": "/affected/3/versions"
},
{
"value": "3.16-1ubuntu0.1~esm1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "iperf3",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.18-2",
"evidence": "/affected/4/versions"
},
{
"value": "3.18-2ubuntu0.1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "iperf3",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.20-2",
"evidence": "/affected/5/versions"
},
{
"value": "3.20-2.1",
"evidence": "/affected/5/versions"
},
{
"value": "3.20-2.1build1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "iperf3",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.18-2",
"evidence": "/affected/6/versions"
},
{
"value": "3.19.1-2",
"evidence": "/affected/6/versions"
},
{
"value": "3.20-2",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2025-54351",
"aliases": [
"UBUNTU-CVE-2025-54351"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "iperf3",
"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"3.0.11-1",
"3.0.11-1ubuntu0.1~esm1",
"3.0.11-1ubuntu0.1~esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54351.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "iperf3",
"binary_version": "3.0.11-1ubuntu0.1~esm2"
},
{
"binary_name": "libiperf0",
"binary_version": "3.0.11-1ubuntu0.1~esm2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "iperf3",
"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"3.6-2",
"3.7-1",
"3.7-2",
"3.7-3",
"3.7-3ubuntu0.1~esm1",
"3.7-3ubuntu0.1~esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54351.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "iperf3",
"binary_version": "3.7-3ubuntu0.1~esm2"
},
{
"binary_name": "libiperf0",
"binary_version": "3.7-3ubuntu0.1~esm2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "iperf3",
"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"3.9-1",
"3.9-1build1",
"3.9-1+deb11u1build0.22.04.1",
"3.9-1+deb11u1ubuntu0.1~esm1",
"3.9-1+deb11u1ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54351.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "iperf3",
"binary_version": "3.9-1+deb11u1ubuntu0.1"
},
{
"binary_name": "libiperf0",
"binary_version": "3.9-1+deb11u1ubuntu0.1"
}
]
}
},
{
"ranges": [
{
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{
"introduced": "0"
}
]
}
],
"package": {
"name": "iperf3",
"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"3.14-1",
"3.15-1",
"3.16-1",
"3.16-1build1",
"3.16-1build2",
"3.16-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-54351.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "iperf3",
"binary_version": "3.16-1ubuntu0.1~esm1"
},
{
"binary_name": "libiperf0",
"binary_version": "3.16-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
"introduced": "0"
}
]
}
],
"package": {
"name": "iperf3",
"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.18-2",
"3.18-2ubuntu0.1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
"binary_name": "iperf3",
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{
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}
]
}
},
{
"ranges": [
{
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{
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}
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}
],
"package": {
"name": "iperf3",
"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.20-2",
"3.20-2.1",
"3.20-2.1build1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
"binary_name": "iperf3",
"binary_version": "3.20-2.1build1"
},
{
"binary_name": "libiperf0",
"binary_version": "3.20-2.1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
}
],
"package": {
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"purl": "pkg:deb/ubuntu/iperf3?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"3.19.1-2",
"3.20-2"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "iperf3",
"binary_version": "3.20-2"
},
{
"binary_name": "libiperf0",
"binary_version": "3.20-2"
}
]
}
}
],
"modified": "2026-10-17T12:58:36.798531312Z",
"provider": "osv",
"upstream": [
"CVE-2025-54351"
],
"references": [
"https://ubuntu.com/security/CVE-2025-54351",
"https://www.cve.org/CVERecord?id=CVE-2025-54351",
"https://github.com/esnet/iperf/commit/969b7f70c447513e92c9798f22e82b40ebc53bf0",
"https://github.com/esnet/iperf/releases/tag/3.19.1"
]
},
"related_cves": [
{
"value": "CVE-2025-54351",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358865,
"published_at": "2025-08-03T02:15:00+00:00"
}