CVE-2026-45880

The CVE-2026-45880 entry concerns the Linux kernel PCI/P2PDMA path. When vm_insert_page() fails inside p2pmem_alloc_mmap(), the code path does not call percpu_ref_put() to release the per-CPU reference of the pgmap acquired after gen_pool_alloc_owner(). As a result, memunmap_pages() can hang inde...