AI Threat Alert
CVE-2021-45971
AWAITING NVDAn issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not...
Full CISO analysis pending enrichment.
What systems are affected?
| Package | Ecosystem | Vulnerable Range | Patched |
|---|---|---|---|
| n/a | — | — | No patch |
Do you use n/a? You're affected.
How severe is it?
What should I do?
No patch available
Monitor for updates. Consider compensating controls or temporary mitigations.
Which compliance frameworks are affected?
Compliance analysis pending. Sign in for full compliance mapping when available.
Frequently Asked Questions
What is CVE-2021-45971?
An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).
Is CVE-2021-45971 actively exploited?
No confirmed active exploitation of CVE-2021-45971 has been reported, but organizations should still patch proactively.
How to fix CVE-2021-45971?
No patch is currently available. Monitor vendor advisories for updates.
What is the CVSS score for CVE-2021-45971?
No CVSS score has been assigned yet.
What are the technical details?
Original Advisory
An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).
References
- cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf x_refsource_CONFIRM
- security.netapp.com/advisory/ntap-20220216-0004/ x_refsource_CONFIRM
- insyde.com/security-pledge x_refsource_MISC