VDB
DEBIAN-CVE-2025-21978
DEBIAN-CVE-2025-21978
PUBLISHED
CVSS 5.5 MEDIUM
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.
Risk Scores
CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | linux | 0, 0 |
| Debian:11 | linux-6.1 | 0, 6.1.106-3~deb11u1, 6.1.106-3~deb11u2 |
| Debian:12 | linux | 6.1.52-1, 6.1.55-1, 6.1.55-1~bpo11+1 |
| Debian:14 | linux | 0, 0 |
Timeline
- Apr 1, 2025 CVE Published
- Apr 28, 2026 CVE Updated