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}, { "label": "vulnerable_code_not_in_execute_path", "product_ids": [ "red_hat_fuse_7:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-rocm64-torch291-py312-rhel9" ] } ], "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2515377" } ], "notes": [ { "category": "description", "text": "A flaw was found in Netty, an asynchronous network application framework. When processing malformed domain names in DNS packets, the DNS record decoder fails to release allocated memory. This vulnerability allows an unauthenticated remote attacker to incrementally leak direct memory, eventually leading to a denial of service.", "title": "Vulnerability description" }, { "category": "summary", "text": "io.netty/netty-codec-dns: Netty: Denial of Service via Memory Leak in DNS Record Decoder with Malformed Domain Names", "title": "Vulnerability summary" }, { "category": "other", "text": "This flaw is rated Important because the affected component fails to release allocated memory when it rejects a malformed domain name during DNS record decoding. An unauthenticated remote attacker who can send DNS traffic to an application using the affected DNS resolution functionality can incrementally exhaust available memory until the process becomes unresponsive, resulting in a complete denial of service.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "known_affected": [ "exploit_intelligence:exploit-intelligence/agent-client-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-dispatcher-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-receiver-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9", 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"red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk11-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk17-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk8-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_8:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cpu-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cuda-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-trustyai-service-rhel9", "red_hat_openshift_dev_spaces:devspaces/multicluster-redirector-rhel9", "red_hat_openshift_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-codec-dns" ], "known_not_affected": [ "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-codec-dns", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-codec-dns", "red_hat_build_of_keycloak:keycloak/rhbk-openshift-rhel9", "red_hat_build_of_keycloak:keycloak/rhbk-rhel9-operator", "red_hat_build_of_keycloak:netty-codec-dns", "red_hat_build_of_quarkus:netty-codec-dns", "red_hat_fuse_7:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-rocm64-torch291-py312-rhel9" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-73508" }, { "category": "external", "summary": "RHBZ#2515377", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515377" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-73508", "url": "https://www.cve.org/CVERecord?id=CVE-2026-73508" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-73508", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73508" }, { "category": "external", "summary": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b", "url": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b" }, { "category": "external", "summary": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6", "url": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6" }, { "category": "external", "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final", "url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final" }, { "category": "external", "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final", "url": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final" }, { "category": "external", "summary": "https://github.com/netty/netty/security/advisories/GHSA-mfg7-5gfp-c4w3", "url": "https://github.com/netty/netty/security/advisories/GHSA-mfg7-5gfp-c4w3" } ], "release_date": "2026-08-13T14:27:20.298000+00:00", "remediations": [ { "category": "workaround", "details": "Red Hat recommends upgrading to a fixed version as the primary remediation. Where an immediate upgrade is not possible, restrict network access so that only trusted DNS servers and trusted network peers can send DNS traffic to the affected application, using firewall or network policy rules to block or rate-limit DNS traffic from untrusted sources. This reduces exposure to the malformed DNS records that trigger the issue but does not fully eliminate it; upgrading remains the only complete fix.", "product_ids": [ "exploit_intelligence:exploit-intelligence/agent-client-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-dispatcher-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-receiver-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9", "red_hat_build_of_apicurio_registry_3:netty-codec-dns", "red_hat_build_of_debezium_3:netty-codec-dns", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9-operator", "red_hat_data_grid_8:datagrid/datagrid-8", "red_hat_data_grid_8:netty-codec-dns", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel7.src", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel8.src", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk11-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk17-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk8-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_8:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cpu-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cuda-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-trustyai-service-rhel9", "red_hat_openshift_dev_spaces:devspaces/multicluster-redirector-rhel9", "red_hat_openshift_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-codec-dns" ] }, { "category": "no_fix_planned", "details": "Will not fix", "product_ids": [ "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk11-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk17-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk8-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:netty-codec-dns" ] }, { "category": "none_available", "details": "Affected", "product_ids": [ "exploit_intelligence:exploit-intelligence/agent-client-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-dispatcher-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-receiver-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9", "red_hat_build_of_apicurio_registry_3:netty-codec-dns", "red_hat_build_of_debezium_3:netty-codec-dns", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9-operator", "red_hat_data_grid_8:datagrid/datagrid-8", "red_hat_data_grid_8:netty-codec-dns", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel7.src", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel8.src", "red_hat_jboss_enterprise_application_platform_8:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cpu-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cuda-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-trustyai-service-rhel9", "red_hat_openshift_dev_spaces:devspaces/multicluster-redirector-rhel9", "red_hat_openshift_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-codec-dns" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "exploit_intelligence:exploit-intelligence/agent-client-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-dispatcher-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-receiver-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-codec-dns", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-codec-dns", "red_hat_build_of_apicurio_registry_3:netty-codec-dns", "red_hat_build_of_debezium_3:netty-codec-dns", "red_hat_build_of_keycloak:keycloak/rhbk-openshift-rhel9", "red_hat_build_of_keycloak:keycloak/rhbk-rhel9-operator", "red_hat_build_of_keycloak:netty-codec-dns", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9-operator", "red_hat_build_of_quarkus:netty-codec-dns", "red_hat_data_grid_8:datagrid/datagrid-8", "red_hat_data_grid_8:netty-codec-dns", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel7.src", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel8.src", "red_hat_fuse_7:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk11-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk17-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk8-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_8:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cpu-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cuda-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-rocm64-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-trustyai-service-rhel9", "red_hat_openshift_dev_spaces:devspaces/multicluster-redirector-rhel9", "red_hat_openshift_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-codec-dns" ] } ], "threats": [ { "category": "impact", "details": "Important", "product_ids": [ "exploit_intelligence:exploit-intelligence/agent-client-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-dispatcher-rhel9", "openshift_serverless:openshift-serverless-1/kn-ekb-receiver-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-aws-sqs-source-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9", "openshift_serverless:openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-codec-dns", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-codec-dns", "red_hat_build_of_apicurio_registry_3:netty-codec-dns", "red_hat_build_of_debezium_3:netty-codec-dns", "red_hat_build_of_keycloak:keycloak/rhbk-openshift-rhel9", "red_hat_build_of_keycloak:keycloak/rhbk-rhel9-operator", "red_hat_build_of_keycloak:netty-codec-dns", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9-operator", "red_hat_build_of_quarkus:netty-codec-dns", "red_hat_data_grid_8:datagrid/datagrid-8", "red_hat_data_grid_8:netty-codec-dns", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel7.src", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel8.src", "red_hat_fuse_7:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk11-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk17-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:jboss-eap-7/eap74-els-openjdk8-openshift-rhel8", "red_hat_jboss_enterprise_application_platform_7:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_8:netty-codec-dns", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-codec-dns", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cpu-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th-torch-cuda-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cpu-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch210-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-cuda130-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-th06-rocm64-torch291-py312-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-trustyai-service-rhel9", "red_hat_openshift_dev_spaces:devspaces/multicluster-redirector-rhel9", "red_hat_openshift_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-codec-dns" ] } ], "title": "io.netty/netty-codec-dns: Netty: Denial of Service via Memory Leak in DNS Record Decoder with Malformed Domain Names" } ] }