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"description", "text": "A flaw was found in Netty, a network application framework. A local attacker could exploit a vulnerability in the `netty_unix_socket_recvFd` function when handling `SCM_RIGHTS` messages in `Epoll` or `KQueue DomainSocketChannel` with `DomainSocketReadMode.FILE_DESCRIPTORS` enabled. Incorrect handling of file descriptors could lead to a resource leak, resulting in a Denial of Service (DoS) due to exhaustion of available file descriptors.", "title": "Vulnerability description" }, { "category": "summary", "text": "netty-transport-native-epoll: netty-transport-native-kqueue: Netty: Denial of Service due to file descriptor leak in SCM_RIGHTS message handling", "title": "Vulnerability summary" }, { "category": "other", "text": "This Moderate impact flaw in Netty can lead to a denial of service due to file descriptor exhaustion. The vulnerability requires a local attacker and is only exploitable when applications explicitly enable `DomainSocketReadMode.FILE_DESCRIPTORS` in `Epoll` or `KQueue DomainSocketChannel`, which is not a default configuration in Red Hat products. This significantly reduces the attack surface to specific, custom deployments.", "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": { "fixed": [ "Red Hat JBoss Enterprise Application Platform 8.1" ], "known_affected": [ "cryostat_4:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-kqueue", "red_hat_amq_clients:netty-transport-native-epoll", "red_hat_amq_clients:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_-_hawtio_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-kqueue", "red_hat_build_of_debezium_3:netty-transport-native-epoll", "red_hat_build_of_debezium_3:netty-transport-native-kqueue", "red_hat_build_of_keycloak:netty-transport-native-epoll", "red_hat_build_of_keycloak:rhbk-openshift-rhel9/rhbk-openshift-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_data_grid_8:netty-transport-native-epoll", "red_hat_data_grid_8:netty-transport-native-kqueue", "red_hat_fuse_7:netty-transport-native-epoll", "red_hat_fuse_7:netty-transport-native-kqueue", "red_hat_jboss_enterprise_application_platform_7:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_8:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-kqueue", "red_hat_offline_knowledge_portal:offline-knowledge-portal/rhokp-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-openvino-model-server-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-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_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-transport-native-epoll", "streams_for_apache_kafka_2:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-kqueue" ], "known_not_affected": [ "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel6.src", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel7.src", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel8.src", "red_hat_satellite_6:candlepin", "red_hat_satellite_6:candlepin-selinux", "red_hat_satellite_6:candlepin-selinux::satellite:el8", "red_hat_satellite_6:candlepin.src", "red_hat_satellite_6:candlepin.src::satellite:el8", "red_hat_satellite_6:candlepin::satellite:el8" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-45536" }, { "category": "external", "summary": "RHBZ#2488394", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488394" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-45536", "url": "https://www.cve.org/CVERecord?id=CVE-2026-45536" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-45536", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45536" }, { "category": "external", "summary": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final", "url": "https://github.com/netty/netty/releases/tag/netty-4.1.135.Final" }, { "category": "external", "summary": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final", "url": "https://github.com/netty/netty/releases/tag/netty-4.2.15.Final" }, { "category": "external", "summary": "https://github.com/netty/netty/security/advisories/GHSA-w573-9ffj-6ff9", "url": "https://github.com/netty/netty/security/advisories/GHSA-w573-9ffj-6ff9" } ], "release_date": "2026-06-12T14:12:48.126000+00:00", "remediations": [ { "category": "vendor_fix", "date": "2026-08-04T13:59:30+00:00", "details": "Before applying the update, make sure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258", "product_ids": [ "Red Hat JBoss Enterprise Application Platform 8.1" ], "url": "https://access.redhat.com/errata/RHSA-2026:50085" }, { "category": "workaround", "details": "To mitigate this issue, ensure that `DomainSocketReadMode.FILE_DESCRIPTORS` is not enabled in applications utilizing Netty's `Epoll` or `KQueue DomainSocketChannel`. This feature is not enabled by default, and disabling it prevents the file descriptor leak that could lead to a Denial of Service.", "product_ids": [ "Red Hat JBoss Enterprise Application Platform 8.1", "cryostat_4:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-kqueue", "red_hat_amq_clients:netty-transport-native-epoll", "red_hat_amq_clients:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_-_hawtio_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-kqueue", "red_hat_build_of_debezium_3:netty-transport-native-epoll", "red_hat_build_of_debezium_3:netty-transport-native-kqueue", 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"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_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-transport-native-epoll", "streams_for_apache_kafka_2:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-kqueue" ] }, { "category": "none_available", "details": "Fix deferred", "product_ids": [ "cryostat_4:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-kqueue", "red_hat_amq_clients:netty-transport-native-epoll", "red_hat_amq_clients:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_-_hawtio_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-kqueue", "red_hat_build_of_debezium_3:netty-transport-native-epoll", "red_hat_build_of_debezium_3:netty-transport-native-kqueue", "red_hat_build_of_keycloak:netty-transport-native-epoll", "red_hat_build_of_keycloak:rhbk-openshift-rhel9/rhbk-openshift-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_data_grid_8:netty-transport-native-epoll", "red_hat_data_grid_8:netty-transport-native-kqueue", "red_hat_fuse_7:netty-transport-native-epoll", "red_hat_fuse_7:netty-transport-native-kqueue", "red_hat_jboss_enterprise_application_platform_7:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_8:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-kqueue", "red_hat_offline_knowledge_portal:offline-knowledge-portal/rhokp-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-openvino-model-server-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-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_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_single_sign-on_7:netty-transport-native-epoll", "streams_for_apache_kafka_2:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-kqueue" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1" }, "products": [ "Red Hat JBoss Enterprise Application Platform 8.1", "cryostat_4:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-kqueue", 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"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-transport-native-epoll", "red_hat_fuse_7:netty-transport-native-kqueue", "red_hat_jboss_enterprise_application_platform_7:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_8:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-kqueue", "red_hat_offline_knowledge_portal:offline-knowledge-portal/rhokp-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-openvino-model-server-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-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_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_satellite_6:candlepin", "red_hat_satellite_6:candlepin-selinux", "red_hat_satellite_6:candlepin-selinux::satellite:el8", "red_hat_satellite_6:candlepin.src", "red_hat_satellite_6:candlepin.src::satellite:el8", "red_hat_satellite_6:candlepin::satellite:el8", "red_hat_single_sign-on_7:netty-transport-native-epoll", "streams_for_apache_kafka_2:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-kqueue" ] } ], "threats": [ { "category": "impact", "details": "Moderate", "product_ids": [ "Red Hat JBoss Enterprise Application Platform 8.1", "cryostat_4:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-epoll", "red_hat_amq_broker_7:netty-transport-native-kqueue", "red_hat_amq_clients:netty-transport-native-epoll", "red_hat_amq_clients:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_-_hawtio_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-epoll", "red_hat_build_of_apache_camel_4_for_quarkus_3:netty-transport-native-kqueue", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-epoll", "red_hat_build_of_apache_camel_for_spring_boot_4:netty-transport-native-kqueue", "red_hat_build_of_debezium_3:netty-transport-native-epoll", "red_hat_build_of_debezium_3:netty-transport-native-kqueue", "red_hat_build_of_keycloak:netty-transport-native-epoll", "red_hat_build_of_keycloak:rhbk-openshift-rhel9/rhbk-openshift-rhel9", "red_hat_build_of_keycloak:rhbk/keycloak-rhel9", "red_hat_data_grid_8:netty-transport-native-epoll", "red_hat_data_grid_8:netty-transport-native-kqueue", "red_hat_enterprise_linux_ai_(rhel_ai)_3:bazel6.src", "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-transport-native-epoll", "red_hat_fuse_7:netty-transport-native-kqueue", "red_hat_jboss_enterprise_application_platform_7:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_8:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-epoll", "red_hat_jboss_enterprise_application_platform_expansion_pack:netty-transport-native-kqueue", "red_hat_offline_knowledge_portal:offline-knowledge-portal/rhokp-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-openvino-model-server-rhel9", "red_hat_openshift_ai_(rhoai):rhoai/odh-spark-operator-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_dev_spaces:devspaces/openvsx-rhel9", "red_hat_openshift_dev_spaces:devspaces/pluginregistry-rhel9", "red_hat_satellite_6:candlepin", "red_hat_satellite_6:candlepin-selinux", "red_hat_satellite_6:candlepin-selinux::satellite:el8", "red_hat_satellite_6:candlepin.src", "red_hat_satellite_6:candlepin.src::satellite:el8", "red_hat_satellite_6:candlepin::satellite:el8", "red_hat_single_sign-on_7:netty-transport-native-epoll", "streams_for_apache_kafka_2:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-epoll", "streams_for_apache_kafka_3:netty-transport-native-kqueue" ] } ], "title": "netty-transport-native-epoll: netty-transport-native-kqueue: Netty: Denial of Service due to file descriptor leak in SCM_RIGHTS message handling" } ] }