CVE-2026-43497

A flaw was found in the Linux kernel's udlfb driver. This use-after-free vulnerability occurs because the dlfb_ops_mmap() function does not properly track active memory mappings. When the framebuffer is reallocated, existing memory page table entries (PTEs) are not invalidated. This allows a local attacker to retain read/write access to freed kernel memory pages, potentially leading to arbitrary code execution or information disclosure.