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High severity7.4NVD Advisory· Published Jun 25, 2026· Updated Jul 10, 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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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • OpenBSD/OpenBSD2 versions
    cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*range: <=7.9
    • (no CPE)range: <=7.9
  • OpenBSD/Srcllm-fuzzy
    Range: <=7.9

Patches

Vulnerability mechanics

References

2

News mentions

0

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