UBUNTU-CVE-2026-25061 (CVE-2026-25061)
Vulnerability from osv_ubuntu – Published: 2026-01-29 22:15 – Updated: 2026-05-20 15:26 – Source website
VLAI
Details
tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past tim.bitmap[251]. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in handle_beacon() and related handlers. As of time of publication, no known patches are available.
Severity
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.4.4+repack1-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.4.4+repack1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.0+dfsg-2",
"1.4.3+repack1-1",
"1.4.4+repack1-1",
"1.4.4+repack1-2",
"1.4.4+repack1-2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.4.5+repack1-1ubuntu0.1"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.4.5+repack1-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.4.5+repack1-1ubuntu0.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.4+repack1-3",
"1.4.5+repack1-1",
"1.4.5+repack1-1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.4.5+repack1-4ubuntu0.18.04.1"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.4.5+repack1-4ubuntu0.18.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.4.5+repack1-4ubuntu0.18.04.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.5+repack1-4",
"1.4.5+repack1-4build1",
"1.4.5+repack1-4build2",
"1.4.5+repack1-4ubuntu0.18.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.5.2+repack1-1build2"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.5.2+repack1-1build2"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.5.2+repack1-1build2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.5.2+repack1-1build1",
"1.5.2+repack1-1build2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.6.1-2build1"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.6.1-2build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.6.1-2build1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.1-1",
"1.6.1-2",
"1.6.1-2build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.6.1-3build2"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.6.1-3build2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.6.1-3build2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.1-3",
"1.6.1-3build1",
"1.6.1-3build2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.6.1-3build2"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.6.1-3build2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.6.1-3build2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.1-3build2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "tcpflow",
"binary_version": "1.6.1-3build3"
},
{
"binary_name": "tcpflow-nox",
"binary_version": "1.6.1-3build3"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tcpflow",
"purl": "pkg:deb/ubuntu/tcpflow@1.6.1-3build3?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.1-3build2",
"1.6.1-3build3"
]
}
],
"aliases": [],
"details": "tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past `tim.bitmap[251]`. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in `handle_beacon()` and related handlers. As of time of publication, no known patches are available.",
"id": "UBUNTU-CVE-2026-25061",
"modified": "2026-05-20T15:26:05Z",
"published": "2026-01-29T22:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-25061"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-25061"
},
{
"type": "REPORT",
"url": "https://github.com/simsong/tcpflow/security/advisories/GHSA-q5q6-frrv-9rj6"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-25061"
]
}
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Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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