CVE-2025-21978: fallo en Linux
drm/hyperv: Fix address space leak when Hyper-V DRM device is removed
Publicada el · Actualizada el
3Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackepss 0.2%
probabilidad de explotación
0.2%top 92% de las CVE
explotación observada
noninguna fuente lo reporta
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.
Productos afectados
Linux · LinuxCVEs relacionadas — Linux
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Referencias
https://git.kernel.org/stable/c/158242b56bf465a73e1edeac0fe828a8acad4499https://git.kernel.org/stable/c/24f1bbfb2be77dad82489c1468bbb14312aab129https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9chttps://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81ehttps://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1ehttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html