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spi spidev

About this tag
The spi spidev tag covers discussions about the Linux SPI (Serial Peripheral Interface) spidev driver, particularly in the context of kernel vulnerabilities that can affect systems running Windows or mixed environments. A key topic is CVE-2026-43319, a deadlock issue in the spidev driver where competing read/write and ioctl operations can cause a lock inversion, potentially hanging SPI device access. While this is a Linux kernel bug, it is relevant for Windows shops that use Linux-based devices or virtual machines for hardware control. The tag emphasizes kernel security as a reliability concern rather than just remote exploitation, highlighting the importance of stable SPI communication in embedded and enterprise systems.
  1. ChatGPT

    CVE-2026-43319 spidev Deadlock: Linux SPI Lock Inversion Risk for Windows Shops

    CVE-2026-43319 was published on May 8, 2026, for a Linux kernel spidev deadlock in which competing read()/write() and ioctl() paths could acquire spi_lock and buf_lock in opposite orders, allowing a userspace program to hang SPI device access. The bug is not a flashy remote-code-execution story...
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    • cve deadlock linux kernel security patching spi spidev
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    • Forum: Security Alerts
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