CVE-2026-57589
HIGH
7.4
CVSS 3.1
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().
Metadata
Severity & Metrics
7.4
HIGH CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| OpenBSD | OpenBSD | — | 0 ≤ 7.9 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-416 | cna | CWE-416 Use After Free |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 7.4 | HIGH | 3.1 | cna | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (2)