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.

INFO

Published Date :

2025-04-01T15:47:08.168Z

Last Modified :

2025-11-03T19:40:18.321Z

Source :

Linux
AFFECTED PRODUCTS

The following products are affected by CVE-2025-21978 vulnerability.

Vendors Products
Linux
  • Linux Kernel
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21978.

URL Resource
https://git.kernel.org/stable/c/158242b56bf465a73e1edeac0fe828a8acad4499 cve-icon cve-icon
https://git.kernel.org/stable/c/24f1bbfb2be77dad82489c1468bbb14312aab129 cve-icon cve-icon
https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9c cve-icon cve-icon
https://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81e cve-icon cve-icon
https://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html cve-icon
https://lore.kernel.org/linux-cve-announce/2025040148-CVE-2025-21978-8f3e@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-21978 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-21978 cve-icon
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