Linux Kernel DRM/ETNAVIV Double Unmapping Vulnerability in IOMMU Management

A vulnerability in the Linux kernel's DRM/ETNAVIV component has been addressed. The issue arose in the IOMMU unmapping process, where the system failed to properly check if a mapping had already been reaped. This oversight could lead to an attempt to unmap the same resource twice, potentially corrupting the associated data structures.

Impact

Exploitation of this vulnerability could result in data structure corruption, which may lead to undefined behavior in the kernel or the applications relying on it.