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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-w573-9ffj-6ff9 | Netty: Unix-socket fd receive leaks descriptors when peer sends two at once |
Mon, 15 Jun 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-167 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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Mon, 15 Jun 2026 02:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* |
Fri, 12 Jun 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Netty
Netty netty |
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| Vendors & Products |
Netty
Netty netty |
Fri, 12 Jun 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Fri, 12 Jun 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Netty: Unix-socket fd receive leaks descriptors when peer sends two at once | |
| Weaknesses | CWE-200 CWE-772 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-12T15:05:36.411Z
Reserved: 2026-05-12T17:48:47.878Z
Link: CVE-2026-45536
Updated: 2026-06-12T15:05:29.688Z
Status : Analyzed
Published: 2026-06-12T15:16:27.073
Modified: 2026-06-15T02:14:53.013
Link: CVE-2026-45536
OpenCVE Enrichment
Updated: 2026-06-15T14:00:12Z
Github GHSA