CVE - CVE-2025-21978

CVE-ID
CVE-2025-21978	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/158242b56bf465a73e1edeac0fe828a8acad4499 URL:https://git.kernel.org/stable/c/158242b56bf465a73e1edeac0fe828a8acad4499 MISC:https://git.kernel.org/stable/c/24f1bbfb2be77dad82489c1468bbb14312aab129 URL:https://git.kernel.org/stable/c/24f1bbfb2be77dad82489c1468bbb14312aab129 MISC:https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9c URL:https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9c MISC:https://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81e URL:https://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81e MISC:https://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e URL:https://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e
Assigning CNA
kernel.org
Date Record Created
20241229	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241229)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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