cve 2025 68196

About this tag
CVE-2025-68196 is a Linux kernel vulnerability affecting the AMD DRM display stack. It involves a race condition during link training (LT) automation where the display code could reference dc->current_state while calling into dc_update_planes_and_stream, potentially clobbering current_state and causing a kernel crash. The fix caches relevant stream pointers and iterates over that cached list instead of relying on the mutable current_state. This patch was applied in mid-December 2025. The tag covers discussions about this specific vulnerability, its impact on AMD display functionality, and the kernel patch that resolves it.

  1. Linux Kernel Patch Fixes AMD Display LT Race CVE-2025-68196

    A small but important defensive patch landed in the Linux kernel in mid‑December 2025 that fixes a crash in the AMD DRM display stack: CVE‑2025‑68196 addresses a race where the display code could reference dc->current_state while calling into dc_update_planes_and_stream during link training (LT)...
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