KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub
Summary
| CVE | CVE-2026-62370 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-21 17:17:36 UTC |
| Updated | 2026-09-29 15:17:26 UTC |
| Description | KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.0.0 until 1.21.2, 1.22.2, and 1.23.1, Reader.Read in pkg/viaduct/pkg/packer trusts the 32-bit PackageHeader.PayloadLen received through the CloudHub viaduct message-processing path and allocates that amount of memory before validating an upper bound. An authenticated malicious or compromised edge peer can repeatedly send crafted headers with excessive declared lengths, causing memory exhaustion, CloudHub process termination or restart loops, and temporary disruption of cloud-edge communication. This issue does not provide unauthenticated access or direct code execution. This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1. |
Risk And Classification
Primary CVSS: v3.1 6.5 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.005040000 probability, percentile 0.406740000 (date 2026-09-29)
Problem Types: CWE-789 | CWE-789 CWE-789: Memory Allocation with Excessive Size Value
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | DECLARED | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.23.md | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/commit/0fe1ea18e5d7fde29633286ddf1c7e71cb39... | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/commit/725a73ca35a65d91aa6338e52b8faaab6058... | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/pull/7030 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/pull/7029 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/releases/tag/v1.22.2 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/commit/cc79621943fff9d3f62638d9403ef0cfeda3... | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/security/advisories/GHSA-gfw4-49f9-cp25 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/pull/7028 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.21.md | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/releases/tag/v1.21.2 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/releases/tag/v1.23.1 | [email protected] | github.com | |
| github.com/kubeedge/kubeedge/blob/master/CHANGELOG/CHANGELOG-1.22.md | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.