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CVE-2026-57589 is a use-after-free vulnerability in OpenBSD's sys/kern/sysv_sem.c affecting versions through 7.9. The flaw occurs during a context switch after tsleep in sys_semget(), allowing a local attacker to escalate privileges to root. The NVD record is currently awaiting enrichment with CVSS scoring.

cve-2026-57589

References to Advisories, Solutions, and Tools