SecurityLobstersabout 4 hours ago
OpenBSD 7.9 use-after-free allows root escalation
1 min read
OpenBSD through version 7.9 contains a use-after-free vulnerability in sys/kern/sysv_sem.c. The flaw, tracked as CVE-2026-57589, allows local privilege escalation to root via a context switch use-after-free after tsleep in sys_semget.
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