CVE-2026-57589 – OpenBSD Use-After-Free Privilege Escalation

CVE ID :CVE-2026-57589

Published : June 25, 2026, 12:33 a.m. | 1 hour, 11 minutes ago

Description :sys/kern/sysv_sem.c in OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root. This is a context switch use-after-free after tsleep in sys_semget().

Severity: 7.4 | HIGH

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