🛡️ CVE-2022-33986
🟡 CVSS 6.4 — Medium ✅ No Known Exploit CWE-367 NVD
6.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056

Details

Severity MEDIUM
CVSS Score 6.4
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE CWE-367
Public Exploit ✅ No
Source NVD
Published 2022-11-15
Updated 2026-06-08
Modified 2025-04-30
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 5.5 5.5.05.52.23

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