Linux Kernel Vulnerability in Exynos7 DRM Handling

CVE-2025-38467

What is CVE-2025-38467?

A vulnerability has been identified in the Linux kernel specifically within the Exynos7 DRM handling code. When a TTY serial or another console device is supported, there is a potential for the kernel to experience a panic during the boot process. This issue results from a race condition, where the system attempts to handle vertical blanking interrupts (vblanks) without ensuring the DRM device is properly prepared for handling these calls. By implementing a validation check to confirm whether the DRM device can manage vblanks before invoking the drm_crtc_handle_vblank() method, the risk of a kernel panic can be mitigated.

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