{"cve":{"cve_id":"CVE-2026-45536","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00136,"epss_percentile":0.03336,"epss_as_of":"2026-06-23","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->cmsg_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.","published_at":"2026-06-12T14:12:48.126000Z","last_modified_at":null,"cvss_v3_score":4.0,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-200","CWE-772"],"nvd_references":["https://github.com/netty/netty/security/advisories/GHSA-w573-9ffj-6ff9","https://github.com/netty/netty/releases/tag/netty-4.1.135.Final","https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:33.078798Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"L","value_label":"Low"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"netty","vendor_name":"netty","product_slug":"netty","product_name":"netty","version_start":">= 4.2.0.Final, < 4.2.15.Final","version_start_inclusive":true,"version_end":">= 4.2.0.Final, < 4.2.15.Final","version_end_inclusive":true,"cpe23_uri":"cve5:netty:netty:>= 4.2.0.Final, < 4.2.15.Final:>= 4.2.0.Final, < 4.2.15.Final"},{"vendor_slug":"netty","vendor_name":"netty","product_slug":"netty","product_name":"netty","version_start":"< 4.1.135.Final","version_start_inclusive":true,"version_end":"< 4.1.135.Final","version_end_inclusive":true,"cpe23_uri":"cve5:netty:netty:< 4.1.135.Final:< 4.1.135.Final"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/netty/netty/security/advisories/GHSA-w573-9ffj-6ff9","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/netty/netty/releases/tag/netty-4.1.135.Final","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/netty/netty/releases/tag/netty-4.2.15.Final","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-12T14:12:48.126000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:54:40.246008Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:40.246008Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:40.246008Z","label":"CVSS score revised","source":"cvelistv5"}]}