pci deadlock

About this tag
The tag 'pci deadlock' on WindowsForum.com covers a specific Linux kernel vulnerability, CVE-2025-21951, which involves a deadlock in the MHI PCI host driver. This deadlock can cause a complete loss of system availability during device recovery or power-management transitions. The content focuses on the technical details of the locking fix, the operational risk for systems using MHI-based PCI devices, and the need for upstream or vendor updates. While the tag is Linux-specific, it may be relevant to Windows users running virtualized or dual-boot environments that interact with PCI devices. The discussion is centered on kernel-level troubleshooting and security updates.

  1. Linux Kernel MHI PCI Deadlock Fix CVE-2025-21951

    A subtle locking change in the Linux kernel’s MHI PCI host driver — tracked as CVE-2025-21951 — patched a deadlock that could cause a full loss of availability during device recovery or system power-management transitions, and operators should treat it as a real operational risk for systems that...
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    • linux kernel mhi driver pci deadlock security vulnerability
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    • Forum: Security Alerts