intel xe guc

About this tag
The intel xe guc tag covers discussions about the Intel Xe Graphics microcontroller (GuC) and its control transport (CT) interface, particularly in the context of Linux kernel fixes. A recent thread details a patch for CVE-2025-68193, which addresses a use-after-free vulnerability in the GuC CT teardown process within the DRM Xe driver. The fix introduces a devm-managed release action to ensure proper ordering of CT disablement and buffer object freeing, preventing crashes during GGTT TLB invalidation. This tag is relevant for developers and system administrators working with Intel Xe GPUs on Linux, focusing on kernel-level stability and security patches.

  1. Linux Kernel Fix for CVE-2025-68193: Devm CT Teardown in Intel Xe GuC

    The Linux kernel received a targeted fix for CVE-2025-68193 that changes how the Intel Xe GuC control transport (CT) is torn down: maintainers added a devm-managed release action to ensure the CT is disabled before its backing buffer object (CTB) is freed, closing a deterministic use‑after‑free...
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    • devm actions intel xe guc kernel security linux kernel
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    • Forum: Security Alerts