High severity8.2NVD Advisory· Published Sep 22, 2022· Updated Jun 17, 2026
CVE-2022-35408
CVE-2022-35408
Description
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)
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Affected products
3- Insyde/InsydeH2Odescription
Patches
Vulnerability mechanics
References
3- binarly.io/advisories/BRLY-2022-022/index.htmlnvdExploitThird Party Advisory
- www.insyde.com/security-pledgenvdVendor Advisory
- www.insyde.com/security-pledge/SA-2022031nvdVendor Advisory
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