CVE-2022-30771

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-15 · updated 2026-06-17
Weakness: CWE-787

Description

Initialization function in PnpSmm could lead to SMRAM corruption when using subsequent PNP SMI functions Initialization function in PnpSmm could lead to SMRAM corruption when using subsequent PNP SMI functions. This issue was discovered by Insyde engineering during a security review. Fixed in: Kernel 5.1: Version 05.17.25 Kernel 5.2: Version 05.27.25 Kernel 5.3: Version 05.36.25 Kernel 5.4: Version 05.44.25 Kernel 5.5: Version 05.52.25 https://www.insyde.com/security-pledge/SA-2022064

Affected products

Insyde Kernel: from 5.1 before 5.1.05.17.25; from 5.2 before 5.2.05.27.25; from 5.3 before 5.3.05.36.25; from 5.4 before 5.4.05.44.25; from 5.5 before 5.5.05.52.25 — fixed in 5.1.05.17.25, 5.2.05.27.25, 5.3.05.36.25, 5.4.05.44.25, 5.5.05.52.25

How to fix

Upgrade to a fixed version: Insyde Kernel 5.1.05.17.25, 5.2.05.27.25, 5.3.05.36.25, 5.4.05.44.25. Check the vendor advisory for mitigations.

References

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