Vulnerability · Published Feb 3, 2022 · Assigned by mitre
CVE-2021-41838
High 8.2
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS NVD)8.2High
Exploit odds (30 days)0.3%top 76.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in SdHostDriver in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of a Numeric Range Comparison Without a Minimum Check.
Affected products (as reported)
References
- https://www.insyde.com/security-pledge x_refsource_MISC
- https://www.insyde.com/security-pledge/SA-2022023 x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20220222-0001/ x_refsource_CONFIRM
- https://www.kb.cert.org/vuls/id/796611
- https://cert-portal.siemens.com/productcert/html/ssa-306654.html