Missing Release of Resource after Effective Lifetime in Netty - CVE-2026-45536
Published: June 8, 2026
Vulnerability identifier: #VU133449
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-45536
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Netty project
Affected software:
Netty
Netty
Detailed vulnerability description
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.
How to mitigate CVE-2026-45536
Install security update from vendor's website.