CVE-2026-57589

Published June 25th, 2026

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CVSS v3

7.4

HIGH

CVSS v2

N/A

Affected

PROJECT

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().

openbsd/src

Read-only git conversion of OpenBSD's official CVS src repository. Pull requests not accepted - send diffs to the tech@ mailing list.

GitHub

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