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negativeSYS.SOURCE: NVD• 2026-07-08T13:24:52Z

Use-after-Free Vulnerability in OpenBSD Allowing Local Privilege Escalation to Root

#OpenBSD#Use-after-Free#Privilege Escalation#Security Vulnerability#CVE-2026-57589

A use-after-free vulnerability in OpenBSD's sys/kern/sysv_sem.c through 7.9 allows local privilege escalation to root via a context switch after tsleep in sys_semget(). The vulnerability is part of NVD's enrichment efforts with CVSS metrics pending.

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