A buffer overflow was reported in the ReFlash module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow was reported in the WMISwSmi module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow was reported in the UltraFunctionTable module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer over-read was reported in the LEMALLDriversConnectedEventHook module in some Lenovo Desktop products that may allow a local attacker with elevated privileges
to disclose sensitive information.
A buffer overflow was reported in the LEMALLDriversConnectedEventHook module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer over-read was reported in the BiosExtensionLoader module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to disclose sensitive information.
A memory leakage vulnerability was reported in the NvmramSmm SMM driver that may allow a local attacker with elevated privileges to write to NVRAM variables.
A memory leakage vulnerability was reported in the DustFilterAlertSmm SMM driver that may allow a local attacker with elevated privileges to write to NVRAM variables.
A memory leakage vulnerability was reported in the 534D0740 DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables.
A memory leakage vulnerability was reported in the 534D0140 DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables.
A memory leakage vulnerability was reported in the SWSMIShadow DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables.
A buffer overflow was reported in the UpdateWMI module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow was reported in the SmuV11DxeVMR module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow was reported in the SmuV11Dxe driver in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow was reported in the SmiFlash module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow was reported in the BiosExtensionLoader module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A potential vulnerability was reported in the SMI callback function of the OemSmi driver that may allow a local attacker with elevated permissions to execute arbitrary code.
A buffer overflow was reported in the OemSmi module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer over-read was reported in the LemSecureBootForceKey module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to disclose sensitive information.
A buffer overflow was reported in the LemSecureBootForceKey module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.
A buffer overflow vulnerability in the SecureBootDXE BIOS driver of some Lenovo Desktop and ThinkStation models could allow an attacker with local access to elevate their privileges to execute arbitrary code.
An ErrorMessage driver stack-based buffer overflow vulnerability in BIOS of some ThinkPad models could allow an attacker with local access to elevate their privileges and execute arbitrary code.
Prior to August 10, 2020, some Lenovo Desktop and Workstation systems were shipped with the Embedded Host Based Configuration (EHBC) feature of Intel AMT enabled. This could allow an administrative user with local access to configure Intel AMT.
Lenovo was notified of a potential denial of service vulnerability, affecting various versions of BIOS for Lenovo Desktop, Desktop - All in One, and ThinkStation, that could cause PCRs to be cleared intermittently after resuming from sleep (S3) on systems with Intel TXT enabled.
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad T460p, BIOS versions up to R07ET90W, and T470p, BIOS versions up to R0FET50W, which may allow for unauthorized access.
A potential vulnerability in the SMI callback function used in Legacy USB driver using passed parameter without sufficient checking in some Lenovo ThinkPad models may allow arbitrary code execution.
A potential vulnerability in the SMI callback function used in the Legacy USB driver using boot services structure in runtime phase in some Lenovo ThinkPad models may allow arbitrary code execution.
In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). Lenovo was notified that after resuming from S3 sleep mode in various versions of BIOS for Lenovo systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.