Description
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 (4)
Core 4
Core References
Vendor Advisory x_refsource_misc
https://www.insyde.com/security-pledge
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20220216-0004/
Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/796611
Scores
CVSS v3
8.2
EPSS
0.0028
EPSS Percentile
19.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (1)
insyde/insydeh2o
5.1 - 5.16.25
Published
Jan 06, 2022
Tracked Since
Feb 18, 2026