Description
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
Advisories 3
- ICSA-23-047-08 Siemens RUGGEDCOM APE1808 CISA ICS & IT advisories · Sep 12, 2023
- SSA-450613 SSA-450613: Insyde BIOS Vulnerabilities in RUGGEDCOM APE1808 Product Family Siemens ProductCERT · Sep 12, 2023
- WID-SEC-2023-0706 Insyde UEFI Firmware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 21, 2023