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CVE-2026-57589

🗓️ 25 Jun 2026 00:33:04Reported by mitreType 
cve
 cve
🔗 web.nvd.nist.gov👁 8 Views

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().

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-57589
25 Jun 202600:33
attackerkb
Cvelist
CVE-2026-57589
25 Jun 202600:33
cvelist
EUVD
EUVD-2026-39156
25 Jun 202600:33
euvd
NVD
CVE-2026-57589
25 Jun 202601:16
nvd
Vulners
CNA
Node
openbsdopenbsdRange07.9
[
  {
    "defaultStatus": "unaffected",
    "product": "OpenBSD",
    "vendor": "OpenBSD",
    "versions": [
      {
        "lessThanOrEqual": "7.9",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

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25 Jun 2026 01:16Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.4
8