A local vulnerability allowing root access has been fixed in OpenBSD
The OpenBSD project has published a patch for the vulnerability (CVE-2026-57589) in the kernel, affecting the implementation of system calls for working with System V semaphores (sem). The issue is caused by accessing already freed memory in the sys_semget() function and can be exploited to gain root privileges by an unprivileged local user in a default configuration. The fix was included in the OpenBSD-current codebase on May 23, but for already […]
