Detections
Analytics
CVE-2025-21978
high
Description
In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for device probing, the MMIO space is released but no unmap is done. Consequently the kernel address space for the mapping is leaked. Fix this by adding iounmap() calls in the device removal path, and in the error path during device probing.
References
https://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e
https://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81e
https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9c
https://git.kernel.org/stable/c/24f1bbfb2be77dad82489c1468bbb14312aab129
https://git.kernel.org/stable/c/158242b56bf465a73e1edeac0fe828a8acad4499