DMA transactions which are targeted at input buffers used for the NvmExpressLegacy 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 NvmExpressLegacy 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. This issue was fixed in kernel 5.2: 05.27.25, kernel 5.3: 05.36.25, kernel 5.4: 05.44.25, kernel 5.5: 05.52.25 https://www.insyde.com/security-pledge/SA-2022053
2022-11-15T00:15:12.110
2025-04-30T21:15:52.717
Modified
CVSSv3.1: 7.0 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | insyde | kernel | < 5.2.05.27.25 | Yes |
| Application | insyde | kernel | < 5.3.05.36.25 | Yes |
| Application | insyde | kernel | < 5.4.05.44.25 | Yes |
| Application | insyde | kernel | < 5.5.05.52.25 | Yes |