VULNERABILITY INTELLIGENCE

CVE-2022-33986

CVSS score6.4 MEDIUM
EPSS probability0.14%
CISA KEVNot currently listed
Published2022-11-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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

Weakness classification

  • nvd@nist.gov: CWE-367
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-367

Primary references