{"cve":"CVE-2022-31243","nvd":{"published":"2022-11-15T00:15:11.377","modified":"2026-06-17T04:45:12.057","status":"Modified","description":"Update description and links DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver 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 FvbServicesRuntimeDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in Kernel 5.2: 05.27.21. Kernel 5.3: 05.36.21. Kernel 5.4: 05.44.21. Kernel 5.5: 05.52.21 https://www.insyde.com/security-pledge/SA-2022044","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","score":6.4},"cwes":["CWE-367"],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf","https://www.insyde.com/security-pledge","https://www.insyde.com/security-pledge/SA-2022044","https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf","https://www.insyde.com/security-pledge"],"products":["insyde:kernel"],"source":"nvd","synced_at":"2026-10-19T21:37:08.729216836+00:00"},"epss":{"cve":"CVE-2022-31243","score":0.00156,"percentile":0.04747,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}