{"answers":{"affected":"8 open source packages ship an affected version, including io.netty:netty-transport-native-epoll and io.netty:netty-transport-native-kqueue. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-45536 in the wild and no public exploit code.","fix":"Upgrade io.netty:netty-transport-native-epoll to a fixed version for your release line: 4.1.135.Final or 4.2.15.Final.","what":"CVE-2026-45536 is a medium-severity denial of service vulnerability in Netty Netty, published on 12 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-45536 and fix it if it is affected.\n\nWhat it is: CVE-2026-45536 is a medium-severity denial of service vulnerability in Netty Netty, published on 12 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-45536 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.netty:netty-transport-native-epoll (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-transport-native-epoll (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-transport-native-epoll (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n- io.netty:netty-transport-native-epoll (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n- io.netty:netty-transport-native-kqueue (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-transport-native-kqueue (Maven): affected all versions; fixed in 4.1.135.Final\n- io.netty:netty-transport-native-kqueue (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n- io.netty:netty-transport-native-kqueue (Maven): affected from 4.2.0.Final; fixed in 4.2.15.Final\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-45536/ (Markdown: https://insights.sbomify.com/CVE-2026-45536/index.md)","id":"CVE-2026-45536","markdown":"https://insights.sbomify.com/CVE-2026-45536/index.md","name":"CVE-2026-45536","record":{"aliases":["CLEANSTART-2026-GT99821","CLEANSTART-2026-QW73146","CLEANSTART-2026-TR21269","CLEANSTART-2026-YZ64001","CLEANSTART-2026-ZM65468","DEBIAN-CVE-2026-45536","ECHO-323c-8f17-0fb5","GHSA-w573-9ffj-6ff9","MINI-2mj6-jgrp-42r7","MINI-3h3j-37rw-27q2","MINI-3jv5-fjmj-c8hf","MINI-46p4-ph98-3rqh","MINI-4qm8-h5p4-3jf5","MINI-52v8-xg2r-p4c5","MINI-54rx-wqrx-hm2g","MINI-5gfj-qh7c-h7v4","MINI-5vwv-xqqp-wr4g","MINI-6hwq-wcrx-gq57","MINI-6jqq-c345-cq9q","MINI-6qjg-7f67-fw3w","MINI-6wpp-55qg-526j","MINI-74w7-m879-34f4","MINI-7694-2crm-p2r6","MINI-7ff3-2f98-9q47","MINI-8643-3p6g-2rjc","MINI-8fx7-q2f9-pv6m","MINI-8g42-4w9q-g3g3","MINI-98r2-2q5w-4wgr","MINI-9f7j-2vp5-gq87","MINI-9q6f-gwp7-hrc6","MINI-9vrv-5x2p-vm7p","MINI-c867-wpc3-6474","MINI-cr3r-cf4x-w3r8","MINI-crp2-c964-28j6","MINI-f3pq-95vx-6jpp","MINI-f5wg-5mf2-4vhh","MINI-f9pg-84hv-98m9","MINI-frq4-g9vq-66g4","MINI-fwpx-p9fj-g84w","MINI-g7ch-xrg2-4ffr","MINI-g85q-w5x8-rc42","MINI-g9xh-g6xc-wfgm","MINI-gm69-3qg2-cghj","MINI-gmvp-wh64-75hw","MINI-grfg-6mhc-83xf","MINI-h6rx-6h8x-6pv2","MINI-h83h-8423-qq86","MINI-hjc8-2f75-4r7j","MINI-hw4q-x796-cgcw","MINI-hw9v-rpgf-mx5j","MINI-j7vv-33c9-whjq","MINI-jwm4-8rp9-qvw9","MINI-m229-6w6p-rrgp","MINI-mwmr-7jxc-vrw8","MINI-p2r5-r4w9-5jgw","MINI-ph3v-rg97-6qxg","MINI-pp52-5w28-jm45","MINI-q2hj-g3jr-cv59","MINI-qf58-6hpq-3hhg","MINI-rvmg-9xx9-7q7m","MINI-w5gw-3v69-x887","MINI-xr49-f938-cr5g","MINI-xwvq-76m4-75p6","MINI-xx9h-c97f-3p34","RHLW-2026-778faaa627fd5b22","RHLW-2026-a889d214e9ef7d94","ROOT-APP-MAVEN-CVE-2026-45536","UBUNTU-CVE-2026-45536"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","data_read"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Netty network framework","requires_auth":"none","summary":"A remote attacker can leak file descriptors in Netty applications using Unix sockets, potentially causing resource exhaustion and denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"netty","vendor":"netty"}],"cvss":{"score":4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-772","name":"Missing Release of Resource after Effective Lifetime"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, netty_unix_socket_recvFd sets msg_control to `char control[CMSG_SPACE(sizeof(int))]` (line 940) — 24 bytes on 64-bit Linux. A peer-sent SCM_RIGHTS cmsg carrying two ints has cmsg_len = CMSG_LEN(8) = 24, which fits exactly with no MSG_CTRUNC, so the kernel installs both fds in the receiving process. The subsequent check `cmsg-\u003ecmsg_len == CMSG_LEN(sizeof(int))` (line 972, expected 20) fails, the branch that would read the fd is skipped, and neither installed fd is closed. The for(;;) loop calls recvmsg again (non-blocking → EAGAIN → Java maps to 0 → read loop exits normally), leaving two leaked fds per message. There is no MSG_CTRUNC handling. Reachable via Epoll/KQueue DomainSocketChannel when the application opts into DomainSocketReadMode.FILE_DESCRIPTORS (non-default). Versions 4.1.135.Final and 4.2.15.Final patch the issue.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Netty: Unix-socket fd receive leaks descriptors when peer sends two at once","id":"CVE-2026-45536","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"netty:netty","products":["netty:netty"],"type":"denial_of_service","year":"2026"},"n_packages":8,"n_references":3,"next":{"headline":"OpenSIPS: Global Buffer Overflow in construct_uri","id":"CVE-2026-45537"},"packages":[{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-transport-native-epoll","purl":null,"source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-transport-native-epoll","purl":"pkg:maven/io.netty/netty-transport-native-epoll","source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-transport-native-epoll","purl":null,"source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-transport-native-epoll","purl":"pkg:maven/io.netty/netty-transport-native-epoll","source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-transport-native-kqueue","purl":null,"source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.1.135.Final"],"introduced":["0"],"last_affected":[],"package":"io.netty:netty-transport-native-kqueue","purl":"pkg:maven/io.netty/netty-transport-native-kqueue","source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-transport-native-kqueue","purl":null,"source":"GHSA-w573-9ffj-6ff9"},{"ecosystem":"Maven","fixed":["4.2.15.Final"],"introduced":["4.2.0.Final"],"last_affected":[],"package":"io.netty:netty-transport-native-kqueue","purl":"pkg:maven/io.netty/netty-transport-native-kqueue","source":"GHSA-w573-9ffj-6ff9"}],"prev":{"headline":"DataEase: Stored SQL Injection Vulnerability","id":"CVE-2026-45535"},"products":["netty"],"published":"2026-06-12","related":[{"cvss_score":9.1,"headline":"Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext","id":"CVE-2026-75595","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":8.7,"headline":"Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing","id":"CVE-2026-75596","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":8.7,"headline":"Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang","id":"CVE-2026-59901","kev_date_added":null,"published":"2026-07-29"},{"cvss_score":8.7,"headline":"Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion","id":"CVE-2026-55851","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.7,"headline":"Netty SpdyHttpDecoder: ByteBuf Reference Leak on RST_STREAM Leads to Native Memory Exhaustion","id":"CVE-2026-56745","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.7,"headline":"Netty Vulnerable to DNS Cache Poisoning via Missing Bailiwick Checks in CNAME Records","id":"CVE-2026-45674","kev_date_added":null,"published":"2026-06-12"},{"cvss_score":8.7,"headline":"Netty has Insufficient Bailiwick Validation for NS Records","id":"CVE-2026-47691","kev_date_added":null,"published":"2026-06-12"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-12","vendors":["netty"]},"summary":"A remote attacker can leak file descriptors in Netty applications using Unix sockets, potentially causing resource exhaustion and denial of service.","url":"https://insights.sbomify.com/CVE-2026-45536/"}