🛡️ CVE-2022-32478
🟠 CVSS 7.0 — High ✅ No Known Exploit CWE-367 NVD
7.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the IdeBusDxe shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.

Details

Severity HIGH
CVSS Score 7.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-367
Public Exploit ✅ No
Source NVD
Published 2023-02-15
Updated 2026-06-08
Modified 2025-03-19
Fix URL N/A

Affected Packages

Software From version Fixed in
insydeh2o 5.4 5.4.05.44.27

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