CVE-2022-30774

Severity: medium (CVSS 6.4 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-367

Description

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; 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 5.2.05.27.29, 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 5.2.05.27.29, 5.3.05.36.25, 5.4.05.44.25, 5.5.05.52.25. Check the vendor advisory for mitigations.

References

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