Linux Laptops Exposed: 200,000+ Framework Devices Vulnerable to Secure Boot Bypass Attacks

Secure Boot Bypass Risk Threatens Nearly 200,000 Linux Framework Laptops A critical security vulnerability has been discovered in nearly 200,000 Linux-based Framework laptops, allowing attackers to bypass Secure Boot protections and load persistent bootkits. The issue stems from a signed UEFI shell command that provides direct read-write access to system memory, which can be abused to disable signature verification. According to Eclypsium, a firmware security company, the problem arises from including a "memory modify" (mm) command in legitimately signed UEFI shells shipped with Framework's systems. This command, intended for low-level diagnostics and firmware debugging, can also be leveraged to break the Secure Boot trust chain by targeting the gSecurity2 variable. "This command writes zeros to the memory location containing the security handler pointer, effectively disabling signature verification for all subsequent module loads," said Eclypsium researchers in a statement. "This vulnerability is particularly concerning because it allows attackers to load persistent bootkits like BlackLotus or HybridPetya." Framework has begun patching affected models, but some fixes and DBX updates are still pending. The company has not commented on the exact number of laptops affected or the timeline for completing patches. The inclusion of the mm command in signed UEFI shells is a critical oversight that highlights the importance of rigorous testing and validation in firmware development. "This vulnerability demonstrates the need for more robust security measures in firmware development, particularly when it comes to low-level commands with high privileges," said Eclypsium's chief technology officer. The Secure Boot bypass risk has significant implications for users who rely on these laptops for sensitive work or personal data. The potential for attackers to load persistent bootkits raises concerns about data integrity and confidentiality. Framework's response to the vulnerability has been swift, but some experts argue that more needs to be done to address the root cause of the issue. "While patching affected models is a necessary step, it does not address the underlying problem," said a security expert who wished to remain anonymous. "Firmware developers must take a more proactive approach to ensuring the security of their products." As the situation unfolds, users are advised to check with Framework for updates on patches and DBX fixes. In the meantime, experts recommend exercising caution when using affected laptops and taking steps to protect sensitive data. Background: Secure Boot is a security feature that ensures only authorized software can be loaded during the boot process. The vulnerability discovered in Framework laptops allows attackers to bypass this protection, potentially leading to persistent malware infections. Additional Perspectives: "This vulnerability highlights the importance of firmware security and the need for more robust testing and validation processes," said a spokesperson for Eclypsium. "We take the security of our products seriously and are working diligently to address this issue," said a Framework representative. Current Status and Next Developments: Framework has begun patching affected models, but some fixes and DBX updates are still pending. Users are advised to check with Framework for updates on patches and DBX fixes. As the situation unfolds, experts will continue to monitor developments and provide guidance on mitigating the risk of Secure Boot bypass attacks. *Reporting by It.*