OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root (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().
Metrics
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:
NIST: NVD
NVD assessment not yet provided.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/openbsd/src/commit/1957873d2063db11dab780eca75b5e629d1e838d | MITRE | |
| https://openai.com/index/patch-the-planet/ | MITRE |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | MITRE |
Change History
3 change records found show changes