Linux Distros Unpatched Vulnerability : CVE-2026-80633

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the call...

CVE-2026-80633

In the Linux kernel, the following vulnerability has been resolved: iommufd: Take dmaresv lock before dmabufunpin in release path dmabufunpin requires the caller to hold the exporter's dmaresv lock: void dmabufunpinstruct dmabufattachment attach ... dmaresvasserthelddmabuf-resv;...

CVE-2026-80633

CVE-2026-80633 is a locking bug in the Linux kernel iommufd subsystem. The function iopt_release_pages() calls dma_buf_unpin() without holding the required dma_resv lock, causing a kernel WARN every time iommufd_ioas_destroy() or iommufd_ioas_unmap() releases the last reference on a DMABUF-backed...