Blind VXLAN injection into encrypted overlay networks from cluster peer
The firewall rules which mark VXLAN datagrams for encryption indiscriminately match both authentic VXLAN datagrams sent from the kernel and forged datagrams sent by user processes. Any packet sent from the host network namespace of a Linux Swarm node is encrypted with the overlay-network IPsec parameters which meets the following criteria: - UDP datagram - Destination port is the Swarm data-path port - Datagram starts with a VXLAN header for the VNI of an encrypted overlay network which any running container on the node is connected to
CVE-2026-92542
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-92542
Docker Engine
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Docker Engine overlay network driver
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Moby overlay network driver
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Docker",
"product": "Docker Engine",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "25.0.19",
"versionType": "semver"
},
{
"status": "affected",
"version": "26.0.0",
"lessThan": "29.8.2",
"versionType": "semver"
}
],
"platforms": [
"Linux"
],
"defaultStatus": "unaffected"
},
{
"vendor": "Docker",
"product": "Docker Engine overlay network driver",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "v25.0.19",
"versionType": "semver"
},
{
"status": "affected",
"version": "v26.0.0",
"lessThan": "*",
"versionType": "semver"
}
],
"platforms": [
"Linux"
],
"packageName": "github.com/docker/docker/libnetwork/drivers/overlay",
"defaultStatus": "unaffected"
},
{
"vendor": "Moby",
"product": "Moby overlay network driver",
"versions": [
{
"status": "affected",
"version": "v2.0.0-beta.0",
"lessThan": "v2.0.0-beta.25",
"versionType": "semver"
}
],
"platforms": [
"Linux"
],
"packageName": "github.com/moby/moby/v2/daemon/libnetwork/drivers/overlay",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-92542
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12277 · Revision 1
- Added to Heist Feed
- Publisher date