CVE-2026-57589 | OpenBSD up to 7.9 sys/kern/sysv_sem.c sys_semget use after free

June 25, 2026 Yanac

A vulnerability, which was classified as critical, was found in OpenBSD up to 7.9. Affected is the function sys_semget of the file sys/kern/sysv_sem.c. Such manipulation leads to use after free.

This vulnerability is uniquely identified as CVE-2026-57589. Local access is required to approach this attack. No exploit exists.

Applying a patch is advised to resolve this issue.VulDB Recent EntriesRead More