CVE-2026-57589
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().
- Affected products
- Openbsd
- Openbsd
- ≤ 7.9
- Fix
- Available
- CVSS 3.1
- 7.8 HIGH
- EPSS
- 0.1% (2th percentile)
- Weakness
- CWE-416
- NVD status
- Analyzed
- Published
- 2026-06-25
CVE-2026-57589 at NVD
No indexed exploits for CVE-2026-57589 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-57589 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.