CVE-2022-32267

Severity: medium (CVSS 6.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% 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 transactions which are targeted at input buffers used for the SmmResourceCheckDxe software SMI handler cause SMRAM corruption (a TOCTOU attack) DMA transactions which are targeted at input buffers used for the software SMI handler used by the SmmResourceCheckDxe driver could cause SMRAM corruption through a TOCTOU attack... This issue was discovered by Insyde engineering. Fixed in kernel Kernel 5.2: 05.27.23. Kernel 5.3: 05.36.23. Kernel 5.4: 05.44.23. Kernel 5.5: 05.52.23 https://www.insyde.com/security-pledge/SA-2022046

Affected products

Insyde Kernel: from 5.2 before 5.2.05.27.23; from 5.3 before 5.3.05.36.23; from 5.4 before 5.4.05.44.23; from 5.5 before 5.5.05.52.23 — fixed in 5.2.05.27.23, 5.3.05.36.23, 5.4.05.44.23, 5.5.05.52.23

How to fix

Upgrade to a fixed version: Insyde Kernel 5.2.05.27.23, 5.3.05.36.23, 5.4.05.44.23, 5.5.05.52.23. Check the vendor advisory for mitigations.

References

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