netty-transport-native-epoll: netty-transport-native-kqueue: Netty: Denial of Service due to file descriptor leak in SCM_RIGHTS message handling

A flaw was found in Netty, a network application framework. A local attacker could exploit a vulnerability in the nettyunixsocketrecvFd function when handling SCMRIGHTS messages in Epoll or KQueue DomainSocketChannel with DomainSocketReadMode.FILEDESCRIPTORS enabled. Incorrect handling of file...

SUSE CVE-2026-45536

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, nettyunixsocketrecvFd sets msgcontrol to char controlCMSGSPACEsizeofint line 940 - 24 bytes on 64-bit Linux. A peer-sent SCMRIGHTS cmsg carrying two ints has...

CVE-2026-45536 Netty: Unix-socket fd receive leaks descriptors when peer sends two at once

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, nettyunixsocketrecvFd sets msgcontrol to char controlCMSGSPACEsizeofint line 940 — 24 bytes on 64-bit Linux. A peer-sent SCMRIGHTS cmsg carrying two ints has...

CVE-2026-45536

CVE-2026-45536 affects Netty, specifically Unix-domain socket fd reception in netty_unix_socket_recvFd. Prior to versions 4.1.135.Final and 4.2.15.Final, a peer-sent SCM_RIGHTS message containing two fds can cause both descriptors to leak due to a mismatch between cmsg_len checks and the actual f...

ai.h2o:h2o-algos (=0.1.9), ai.h2o:h2o-app (=0.1.9) +2053 more potentially affected by CVE-2026-45536 via io.netty:netty-transport-native-kqueue (>=4.1.11.Final <=4.1.134.Final)

io.netty:netty-transport-native-kqueue MAVEN version =4.1.11.Final, =3.30.1.1, =3.10.0.5, =0.2.3.5, =0.1.0, =0.0.1, =2.4.0, =1.5.0, =3.0.0, =3.0.0, =3.0.1 and more Source cves: CVE-2026-45536 Source advisory: OSV:GHSA-W573-9FFJ-6FF9...

ai.spice:spiceai (=0.6.0), app.fmgp:cardano-prism-cli_3 (>=0.1.0-M41 <=0.1.0-M48) +972 more potentially affected by CVE-2026-45536 via io.netty:netty-transport-native-kqueue (>=4.2.0.Final <=4.2.14.Final)

io.netty:netty-transport-native-kqueue MAVEN version =4.2.0.Final, =0.1.0-M41, =0.1.0-M41, =0.1.0-M41, =0.1.0-M41, =4.0.3-M1, =1.21.9, =3.4.7, =6.0.0, =25.4.1, =26.2.1, =26.6.1 and more Source cves: CVE-2026-45536 Source advisory: OSV:GHSA-W573-9FFJ-6FF9...

Netty: Unix-socket fd receive leaks descriptors when peer sends two at once

nettyunixsocketrecvFd sets msgcontrol to char controlCMSGSPACEsizeofint line 940 — 24 bytes on 64-bit Linux. A peer-sent SCMRIGHTS cmsg carrying two ints has cmsglen = CMSGLEN8 = 24, which fits exactly with no MSGCTRUNC, so the kernel installs both fds in the receiving process. The subsequent che...

PT-2026-47608

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A file descriptor leak occurs in the netty unix socket recvFd function when a peer sends two file descriptors simultaneously via an SCM RIGHTS control message. The system allocates a control...

EUVD-2002-0823

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