CVE-2024-52878

High

Description

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, VariableServicesSetVariable () can be called by gRT_>SetVariable () or the SmmSetSensitiveVariable () or SmmInternalSetVariable () from SMM. In VariableServicesSetVariable (), it uses StrSize () to get variable name size, uses StrLen () to get variable name length and uses StrCmp () to compare strings. These actions may cause a buffer over-read.

SeverityHigh
CVSS7.5
Exploit probability—
ProductInsydeh2o
PublishedMay 15, 2025
First seenMay 15, 2025
Weakness typeCWE-126CWE-126

How to fix

Update
  • insyde insydeh2o5.2.05.29.50, 5.3.05.38.50, 5.4.05.46.50, 5.5.05.54.50, 5.6.05.61.50, 5.7.05.70.50 or later

Affected products

ProductAffected versionsFixed in
insyde insydeh2o5.2 ≤ v < 5.2.05.29.50, 5.3 ≤ v < 5.3.05.38.50, 5.4 ≤ v < 5.4.05.46.50, 5.5 ≤ v < 5.5.05.54.50, 5.6 ≤ v < 5.6.05.61.50, 5.7 ≤ v < 5.7.05.70.505.2.05.29.50, 5.3.05.38.50, 5.4.05.46.50, 5.5.05.54.50, 5.6.05.61.50, 5.7.05.70.50

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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