CVE-2026-99097

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper()<br /> <br /> tee_dyn_shm_alloc_helper() derives nr_pages from a caller-supplied size<br /> and passes it to alloc_pages_exact() without checking it. For size == 0<br /> nr_pages is 0, and alloc_pages_exact(0) calls get_order(0), which is<br /> documented as undefined and returns BITS_PER_LONG - PAGE_SHIFT. The page<br /> allocator then trips its order &gt; MAX_PAGE_ORDER warning and fails the<br /> allocation; on a panic_on_warn kernel that ends the boot.<br /> <br /> This can be triggered by TEE_IOC_SHM_ALLOC with struct<br /> tee_ioctl_shm_alloc_data where size is 0.<br /> <br /> Reject a zero page count, as register_shm_helper() already does for the<br /> register path.