Unrated severityNVD Advisory· Published Jun 25, 2026
CVE-2026-57589
CVE-2026-57589
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().
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Affected products
1Patches
Vulnerability mechanics
References
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