CVE-2022-23606

Envoy is an open source edge and service proxy, designed for cloud-native applications. When a cluster is deleted via Cluster Discovery Service (CDS) all idle connections established to endpoints in that cluster are disconnected. A recursion was introduced in the procedure of disconnecting idle connections that can lead to stack exhaustion and abnormal process termination when a cluster has a large number of idle connections. This infinite recursion causes Envoy to crash. Users are advised to upgrade.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-674"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23606.json"
}

References

Affected packages

Git / github.com/envoyproxy/envoy

Affected ranges

Type: GIT
Repo: https://github.com/envoyproxy/envoy
Events: Introduced

a9d72603c68da3a10a1c0d021d01c7877e6f2a30

Fixed

af50070ee60866874b0a9383daf9364e884ded22

Affected versions

v1.*

v1.21.0

Database specific

vanir_signatures_modified

"2026-04-12T15:03:05Z"

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-23606.json"

vanir_signatures

[
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.h"
        },
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "121492910522987967398570563042373873103",
                "208903825150298770882316003860954195851"
            ]
        },
        "id": "CVE-2022-23606-097fed22",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22",
        "signature_type": "Line"
    },
    {
        "target": {
            "file": "test/integration/tcp_tunneling_integration_test.cc"
        },
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "165738277750233846199418982723160704713",
                "44051101608002913249948422506083140770"
            ]
        },
        "id": "CVE-2022-23606-9c39651a",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22",
        "signature_type": "Line"
    },
    {
        "target": {
            "function": "Filter::onDownstreamEvent",
            "file": "source/common/tcp_proxy/tcp_proxy.cc"
        },
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 808.0,
            "function_hash": "296559161755360112084384558440136934044"
        },
        "id": "CVE-2022-23606-a6789e61",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22",
        "signature_type": "Function"
    },
    {
        "target": {
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        },
        "signature_version": "v1",
        "deprecated": false,
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        },
        "id": "CVE-2022-23606-d54b575d",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22",
        "signature_type": "Line"
    },
    {
        "target": {
            "function": "Filter::onUpstreamEvent",
            "file": "source/common/tcp_proxy/tcp_proxy.cc"
        },
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 711.0,
            "function_hash": "63191530169222520921233896458439701262"
        },
        "id": "CVE-2022-23606-efb2c5e4",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22",
        "signature_type": "Function"
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]