CVE-2022-30774: Insyde Kernel

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) . This issue was discovered by Insyde engineering during a security review. This iss was fixed in Kernel 5.2: 05.27.29, Kernel 5.3: 05.36.25, Kernel 5.4: 05.44.25, Kernel 5.5: 05.52.25. CWE-367 https://www.insyde.com/security-pledge/SA-2022043

Affected products

• Insyde Kernel: from 5.2, before 5.2.05.27.29 (fixed in 5.2.05.27.29); from 5.3, before 5.3.05.36.25 (fixed in 5.3.05.36.25); from 5.4, before 5.4.05.44.25 (fixed in 5.4.05.44.25); from 5.5, before 5.5.05.52.25 (fixed in 5.5.05.52.25)

Published 2022-11-15. Last modified 2026-06-17.