MSRC_CVE-2026-39834
Vulnerability from csaf_microsoft - Published: 2026-05-02 00:00 - Updated: 2026-05-27 01:15Summary
Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
9.1 (Critical)
Affected products
Known affected
12 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 17084-9 | — |
None Available
|
|
| Unresolved product id: 17084-8 | — |
None Available
|
|
| Unresolved product id: 17084-5 | — |
None Available
|
|
| Unresolved product id: 17084-4 | — |
None Available
|
|
| Unresolved product id: 17084-2 | — |
None Available
|
|
| Unresolved product id: 17084-7 | — |
None Available
|
|
| Unresolved product id: 17084-1 | — |
None Available
|
|
| Unresolved product id: 17084-12 | — |
None Available
|
|
| Unresolved product id: 17084-3 | — |
None Available
|
|
| Unresolved product id: 17084-11 | — |
None Available
|
|
| Unresolved product id: 17084-10 | — |
None Available
|
|
| Unresolved product id: 17084-6 | — |
None Available
|
References
4 references
| URL | Category |
|---|---|
| https://msrc.microsoft.com/csaf/vex/2026/msrc_cve… | self |
| https://support.microsoft.com/lifecycle | external |
| https://www.first.org/cvss | external |
| https://msrc.microsoft.com/csaf/vex/2026/msrc_cve… | self |
{
"document": {
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2026-39834 Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-39834.json"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh",
"tracking": {
"current_release_date": "2026-05-27T01:15:56.000Z",
"generator": {
"date": "2026-05-27T07:15:09.600Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2026-39834",
"initial_release_date": "2026-05-02T00:00:00.000Z",
"revision_history": [
{
"date": "2026-05-27T01:15:56.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "3.0",
"product": {
"name": "Azure Linux 3.0",
"product_id": "17084"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 cert-manager 0:1.12.15-6.azl3",
"product": {
"name": "azl3 cert-manager 0:1.12.15-6.azl3",
"product_id": "9"
}
}
],
"category": "product_name",
"name": "cert-manager"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 cf-cli 0:8.7.11-5.azl3",
"product": {
"name": "azl3 cf-cli 0:8.7.11-5.azl3",
"product_id": "8"
}
}
],
"category": "product_name",
"name": "cf-cli"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 docker-buildx 0:0.14.0-11.azl3",
"product": {
"name": "azl3 docker-buildx 0:0.14.0-11.azl3",
"product_id": "5"
}
}
],
"category": "product_name",
"name": "docker-buildx"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 docker-compose 0:2.27.0-9.azl3",
"product": {
"name": "azl3 docker-compose 0:2.27.0-9.azl3",
"product_id": "4"
}
}
],
"category": "product_name",
"name": "docker-compose"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 gh 0:2.62.0-15.azl3",
"product": {
"name": "azl3 gh 0:2.62.0-15.azl3",
"product_id": "2"
}
}
],
"category": "product_name",
"name": "gh"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 kubernetes 0:1.30.10-23.azl3",
"product": {
"name": "azl3 kubernetes 0:1.30.10-23.azl3",
"product_id": "7"
}
}
],
"category": "product_name",
"name": "kubernetes"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 kubevirt 0:1.7.1-2.azl3",
"product": {
"name": "azl3 kubevirt 0:1.7.1-2.azl3",
"product_id": "1"
}
}
],
"category": "product_name",
"name": "kubevirt"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 libcontainers-common 0:20240213-3.azl3",
"product": {
"name": "azl3 libcontainers-common 0:20240213-3.azl3",
"product_id": "12"
}
}
],
"category": "product_name",
"name": "libcontainers-common"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 moby-engine 0:25.0.3-17.azl3",
"product": {
"name": "azl3 moby-engine 0:25.0.3-17.azl3",
"product_id": "3"
}
}
],
"category": "product_name",
"name": "moby-engine"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 nvidia-container-toolkit 0:1.17.8-2.azl3",
"product": {
"name": "azl3 nvidia-container-toolkit 0:1.17.8-2.azl3",
"product_id": "11"
}
}
],
"category": "product_name",
"name": "nvidia-container-toolkit"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 packer 0:1.9.5-13.azl3",
"product": {
"name": "azl3 packer 0:1.9.5-13.azl3",
"product_id": "10"
}
}
],
"category": "product_name",
"name": "packer"
},
{
"branches": [
{
"category": "product_version_range",
"name": "azl3 telegraf 0:1.31.0-19.azl3",
"product": {
"name": "azl3 telegraf 0:1.31.0-19.azl3",
"product_id": "6"
}
}
],
"category": "product_name",
"name": "telegraf"
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 cert-manager 0:1.12.15-6.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-9"
},
"product_reference": "9",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 cf-cli 0:8.7.11-5.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-8"
},
"product_reference": "8",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 docker-buildx 0:0.14.0-11.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-5"
},
"product_reference": "5",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 docker-compose 0:2.27.0-9.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-4"
},
"product_reference": "4",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 gh 0:2.62.0-15.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-2"
},
"product_reference": "2",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 kubernetes 0:1.30.10-23.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-7"
},
"product_reference": "7",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 kubevirt 0:1.7.1-2.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-1"
},
"product_reference": "1",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 libcontainers-common 0:20240213-3.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-12"
},
"product_reference": "12",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 moby-engine 0:25.0.3-17.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-3"
},
"product_reference": "3",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 nvidia-container-toolkit 0:1.17.8-2.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-11"
},
"product_reference": "11",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 packer 0:1.9.5-13.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-10"
},
"product_reference": "10",
"relates_to_product_reference": "17084"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "azl3 telegraf 0:1.31.0-19.azl3 as a component of Azure Linux 3.0",
"product_id": "17084-6"
},
"product_reference": "6",
"relates_to_product_reference": "17084"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-39834",
"notes": [
{
"category": "general",
"text": "Go",
"title": "Assigning CNA"
}
],
"product_status": {
"known_affected": [
"17084-9",
"17084-8",
"17084-5",
"17084-4",
"17084-2",
"17084-7",
"17084-1",
"17084-12",
"17084-3",
"17084-11",
"17084-10",
"17084-6"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-39834 Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-39834.json"
}
],
"remediations": [
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-9"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-8"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-5"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-4"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-2"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-7"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-1"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-12"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-3"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-11"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-10"
]
},
{
"category": "none_available",
"date": "2026-05-27T01:15:56.000Z",
"details": "There is no fix available for this vulnerability as of now",
"product_ids": [
"17084-6"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "NONE",
"environmentalsScore": 0.0,
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 9.1,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"products": [
"17084-9",
"17084-8",
"17084-5",
"17084-4",
"17084-2",
"17084-7",
"17084-1",
"17084-12",
"17084-3",
"17084-11",
"17084-10",
"17084-6"
]
}
],
"title": "Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh"
}
]
}
Loading…
Loading…
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.
Loading…
Loading…