ubuntu-cve-2026-78662
Vulnerability from osv_ubuntu
Published
2026-09-03 00:00
Modified
2026-09-03 00:00
Summary
Details
Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.
Severity
N/A (UNKNOWN)
References
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},
{
"binary_name": "golang-any",
"binary_version": "2:1.26~1"
},
{
"binary_name": "golang-go",
"binary_version": "2:1.26~1"
},
{
"binary_name": "golang-src",
"binary_version": "2:1.26~1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "golang-defaults",
"purl": "pkg:deb/ubuntu/golang-defaults@2:1.26~1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:1.24~2",
"2:1.25~1",
"2:1.26~1"
]
}
],
"aliases": [],
"details": "Previously, a channel registered in the mux\u0027s chanList is not usable until it is established. A malicious peer was able flood the channel\u0027s incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.",
"id": "UBUNTU-CVE-2026-78662",
"modified": "2026-09-03T00:00:00Z",
"published": "2026-09-03T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-78662"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-78662"
},
{
"type": "REPORT",
"url": "https://go.dev/cl/826504"
},
{
"type": "REPORT",
"url": "https://go.dev/issue/81316"
},
{
"type": "REPORT",
"url": "https://groups.google.com/g/golang-announce/c/1y3fb2np35U"
},
{
"type": "REPORT",
"url": "https://pkg.go.dev/vuln/GO-2026-6354"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-78662"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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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.
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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