Unrated severityNVD Advisory· Published Sep 22, 2022· Updated May 27, 2025
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.)
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Insyde/InsydeH2Odescription
Patches
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
3- binarly.io/advisories/BRLY-2022-022/index.htmlmitrex_refsource_MISC
- www.insyde.com/security-pledgemitrex_refsource_MISC
- www.insyde.com/security-pledge/SA-2022031mitrex_refsource_MISC
News mentions
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