Vulnerability Details 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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.1%
CVSS Severity
CVSS v3 Score 6.4
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf
- https://www.insyde.com/security-pledge
- https://www.insyde.com/security-pledge/SA-2022048
- https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf
- https://www.insyde.com/security-pledge
- https://www.insyde.com/security-pledge/SA-2022048