CVE-2022-33906

DMA transactions which are targeted at input buffers used for the FwBlockServiceSmm software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the FwBlockServiceSmm driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in kernel 5.2: 05.27.23, 5.3: 05.36.23, 5.4: 05.44.23, 5.5: 05.52.23 https://www.insyde.com/security-pledge/SA-2022048

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf
https://www.insyde.com/security-pledge	Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022048	Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf
https://www.insyde.com/security-pledge	Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022048	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:insyde:kernel::::::::
	cpe:2.3:a:insyde:kernel::::::::
	cpe:2.3:a:insyde:kernel::::::::
	cpe:2.3:a:insyde:kernel::::::::

History

21 Nov 2024, 07:08

Type	Values Removed	Values Added
References	~~() https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf -~~	() https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf -
References	~~() https://www.insyde.com/security-pledge - Vendor Advisory~~	() https://www.insyde.com/security-pledge - Vendor Advisory
References	~~() https://www.insyde.com/security-pledge/SA-2022048 - Vendor Advisory~~	() https://www.insyde.com/security-pledge/SA-2022048 - Vendor Advisory

18 Nov 2022, 15:50

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-11-15 00:15

Updated : 2025-04-30 19:15

NVD link : CVE-2022-33906

Mitre link : CVE-2022-33906

CVE.ORG link : CVE-2022-33906

JSON object : View

Products Affected

insyde

kernel

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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