Fixed
Created: Apr 2, 2025
Updated: May 28, 2025
Resolved Date: May 25, 2025
Found In Version: 10.23.30.1
Fix Version: 10.23.30.17
Severity: Standard
Applicable for: Wind River Linux LTS 23
Component/s: Kernel
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.
CREATE(Triage):(User=admin) CVE-2025-21978 (https://nvd.nist.gov/vuln/detail/CVE-2025-21978)
