CVE-2024-52878 Information

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.

Reference

https://www.insyde.com/security-pledge https://www.insyde.com/security-pledge/sa-2024016/