Missing Release of Resource after Effective Lifetime in Netty - CVE-2026-45536

Vulnerability identifier: #VU133449

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-45536

CWE-ID: CWE-772

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource shutdown in netty_unix_socket_recvFd when receiving SCM_RIGHTS control messages containing two file descriptors over a unix domain socket. A remote attacker can send a specially crafted message to cause a denial of service.

The issue is reachable via Epoll/KQueue DomainSocketChannel only when the application enables DomainSocketReadMode.FILE_DESCRIPTORS.

Netty
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Package Hub 15
Development Tools Module
IBM SPSS Analytic Server
webMethods developer portal
webMethods ControlPlane
netty-tcnative
netty-tcnative-debugsource
netty-javadoc
netty

Install security update from vendor's website.

Netty - addressed in versions 4.1.135, 4.2.15
webMethods developer portal - update to 11.1 Fix14
webMethods ControlPlane - update to 11.1 Fix11
netty-tcnative - update to 2.0.79-150200.3.45.1
netty-tcnative-debugsource - update to 2.0.79-150200.3.45.1
netty-javadoc - update to 4.1.135-150200.4.50.1
netty - update to 4.1.135-150200.4.50.1

• https://github.com/netty/netty/security/advisories/GHSA-w573-9ffj-6ff9

• Multiple vulnerabilities in Netty
• Multiple vulnerabilities in IBM SPSS Analytic Server
• SUSE update for netty, netty-tcnative
• Multiple vulnerabilities in IBM webMethods API Management