mtr — security advisory
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.
- Products
- mtr
- Affected versions
- 0.95-1, 0.95-1.1, 0.96-1, 0.96-1~bpo13+1, 0.96-2
- Fixed versions
- 0.96-2
- CVEs
- CVE-2026-14461
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:51 UTC · Revision 2
Source evidence
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.
osv:DEBIAN-CVE-2026-14461
mtr
Fixed versions: Not specified
mtr
Fixed versions: Not specified
mtr
Fixed versions: 0.96-2
Complete source record
{
"id": "d9a72569d70d4b909bbe0b4b547f43cf1114048be7f2b08a343e032094c829fd",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-14461",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-14461",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-14461",
"products": [
{
"name": {
"value": "mtr",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.95-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.95-1.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.96-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.96-1~bpo13+1",
"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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{
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{
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{
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],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-14461",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V4",
"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
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"package": {
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"purl": "pkg:deb/debian/mtr?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
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"0.95-1.1",
"0.96-1",
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"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14461.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
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"events": [
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"package": {
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"purl": "pkg:deb/debian/mtr?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.95-1.1",
"0.96-1",
"0.96-1~bpo13+1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14461.json"
},
"ecosystem_specific": {
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},
{
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"package": {
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"purl": "pkg:deb/debian/mtr?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
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"0.96-1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14461.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:37.149012472Z",
"provider": "osv",
"upstream": [
"CVE-2026-14461"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-14461"
]
},
"related_cves": [
{
"value": "CVE-2026-14461",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445100,
"published_at": "2026-07-10T11:16:32.823+00:00"
}