CVE-2025-21978

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.

Reserved 2024-12-29 | Published 2025-04-01 | Updated 2025-05-04 | Assigner Linux

Product status

Default status
unaffected

a0ab5abced550ddeefddb06055ed60779a54eb79 before c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e
affected

a0ab5abced550ddeefddb06055ed60779a54eb79 before ad27b4a51495490b815580d9b935e8eee14d1a9c
affected

a0ab5abced550ddeefddb06055ed60779a54eb79 before 24f1bbfb2be77dad82489c1468bbb14312aab129
affected

a0ab5abced550ddeefddb06055ed60779a54eb79 before 158242b56bf465a73e1edeac0fe828a8acad4499
affected

a0ab5abced550ddeefddb06055ed60779a54eb79 before aed709355fd05ef747e1af24a1d5d78cd7feb81e
affected

Default status
affected

6.0
affected

Any version before 6.0
unaffected

6.1.132
unaffected

6.6.84
unaffected

6.12.20
unaffected

6.13.8
unaffected

6.14
unaffected

References

git.kernel.org/...c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e

git.kernel.org/...c/ad27b4a51495490b815580d9b935e8eee14d1a9c

git.kernel.org/...c/24f1bbfb2be77dad82489c1468bbb14312aab129

git.kernel.org/...c/158242b56bf465a73e1edeac0fe828a8acad4499

git.kernel.org/...c/aed709355fd05ef747e1af24a1d5d78cd7feb81e

cve.org (CVE-2025-21978)

nvd.nist.gov (CVE-2025-21978)

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