UBUNTU-CVE-2026-14461 (CVE-2026-14461)
Vulnerability from osv_ubuntu – Published: 2026-07-10 11:16 – Updated: 2026-07-16 18:21 – Source website
VLAI
Details
mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field. ipinfo_lookup() function uses the length of the response as the end-of-message boundary for dn_expand() function. The result is a reliable crash. This issue exists in the mtr through version 0.96 and it was fixed in commit 48e1794414d338ce47abc0f27c25ade8788af9c3.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.85-2"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.85-2"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.85-2?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.85-1",
"0.85-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.86-1ubuntu0.1"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.86-1ubuntu0.1"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.86-1ubuntu0.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.85-3",
"0.86-1",
"0.86-1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.92-1"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.92-1"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.92-1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.87-1",
"0.92-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.93-1"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.93-1"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.93-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.93-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.95-1"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.95-1"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.95-1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.94-1build1",
"0.94-2ubuntu1",
"0.95-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.95-1.1ubuntu0.1"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.95-1.1ubuntu0.1"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.95-1.1ubuntu0.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.95-1",
"0.95-1.1",
"0.95-1.1build1",
"0.95-1.1build2",
"0.95-1.1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mtr",
"binary_version": "0.95-1.1ubuntu2"
},
{
"binary_name": "mtr-tiny",
"binary_version": "0.95-1.1ubuntu2"
}
],
"priority_reason": "Only a denial of service in traceroute tool"
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "mtr",
"purl": "pkg:deb/ubuntu/mtr@0.95-1.1ubuntu2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.95-1.1ubuntu1",
"0.95-1.1ubuntu2"
]
}
],
"aliases": [],
"details": "mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field.\u00a0ipinfo_lookup() function uses the length of the response as the\u00a0end-of-message boundary for dn_expand() function.\u00a0The result is a reliable crash. This issue exists in the mtr through version 0.96 and it was fixed in commit\u00a048e1794414d338ce47abc0f27c25ade8788af9c3.",
"id": "UBUNTU-CVE-2026-14461",
"modified": "2026-07-16T18:21:12Z",
"published": "2026-07-10T11:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-14461"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-14461"
},
{
"type": "REPORT",
"url": "https://cert.pl/en/posts/2026/07/CVE-2026-14461"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-14461"
]
}
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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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