News › linux
By Zayden R., July 20, 2026
The Qualcomm Crypto Engine Accelerator driver is being disabled in Linux 7.3. It has been found slower than CPU handling and plagued with bugs, including race conditions posing security risks.
In a move that's sure to impact systems relying on Qualcomm's cryptographic solutions, the Linux 7.3 kernel has decided to disable the Qualcomm Crypto Engine Accelerator (QCE) driver. This decision comes after multiple issues were identified, notably its inefficiency compared to CPU-based cryptographic processing, as well as a troubling history of bugs and security vulnerabilities. The QCE driver, once considered a promising offload mechanism for cryptographic operations, has fallen short of expectations. Engineers have found that the driver not only lags behind CPU cores in handling cryptographic tasks but also introduces race conditions that could potentially compromise system security. This is not the first time the QCE has been under scrutiny. Previous iterations of the driver have been marred by stability issues, prompting patches and workarounds that have not sufficed to bring it up to par. With Linux 7.3, maintainers are taking a firm stance by sidelining the driver altogether. From a practical standpoint, this development means that systems previously relying on QCE for cryptographic acceleration will need to revert to CPU-based processing or explore alternative hardware solutions. While this might lead to increased CPU load, the trade-off comes with enhanced stability and security. For sysadmins and developers, this serves as a reminder of the importance of rigorous testing and validation of hardware accelerators before relying on them in production environments. It's a clear example of how performance metrics and security assessments can lead to significant shifts in driver support within the Linux kernel. The removal of QCE support in Linux 7.3 underscores the kernel's commitment to security and efficiency, even if it means stepping back from certain hardware optimizations.