CVE-2026-57589

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.4 / 10

Vector String

                                        CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H                                    

Vulnerability 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().

Vulnerability Details

Published Date

June 25, 2026

Last Modified

June 25, 2026

CWE ID

CWE-416

Source

NVD

Vendor

OpenBSD

Product

OpenBSD

External References

https://github.com/openbsd/src/commit/1957873d2063db11dab780eca75b5e629d1e838d
https://openai.com/index/patch-the-planet/

CVE-2026-57589

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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