UBUNTU-CVE-2026-6069 (CVE-2026-6069)
Vulnerability from osv_ubuntu – Published: 2026-04-10 14:16 – Updated: 2026-05-20 15:24 – Source website
VLAI
Details
NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when slen exceeds the buffer capacity.
Severity
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "2.11.08-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@2.11.08-1ubuntu0.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.11.06-1really2.11.05-1",
"2.11.08-1",
"2.11.08-1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "2.13.02-0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@2.13.02-0.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.13.01-2",
"2.13.02-0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "2.14.02-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@2.14.02-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.14.02-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "2.15.05-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@2.15.05-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.15.05-1",
"2.15.05-1ubuntu0.1~esm1",
"2.15.05-1ubuntu0.1~esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "2.16.01-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@2.16.01-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.16.01-1",
"2.16.01-1build1",
"2.16.01-1ubuntu0.1~esm1",
"2.16.01-1ubuntu0.1~esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "2.16.03-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@2.16.03-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.16.03-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nasm",
"binary_version": "3.01-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "nasm",
"purl": "pkg:deb/ubuntu/nasm@3.01-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.16.03-1",
"3.01-1"
]
}
],
"aliases": [],
"details": "NASM\u2019s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.",
"id": "UBUNTU-CVE-2026-6069",
"modified": "2026-05-20T15:24:33Z",
"published": "2026-04-10T14:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-6069"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-6069"
},
{
"type": "REPORT",
"url": "https://github.com/netwide-assembler/nasm/issues/217"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"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-2026-6069"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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