In the Linux kernel, following vulnerability has been resolved: arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level Though acpi_find_last_cache_level() always returned and the document states it will return any errors caused by lack a PPTT table, it never negative values before. Commit 0c80f9e165f8 ("ACPI: PPTT: Leave table mapped for runtime usage") however changed returning -ENOENT if no was found. The value returned from is then assigned unsigned fw_level. It result in number cache leaves calculated incorrectly as a huge which cause warning __alloc_pages as order would be great than MAX_ORDER because huge cache value. | WARNING: CPU: 0 PID: 1 at mm/page_alloc.c:5407 __alloc_pages+0x74/0x314 Modules linked in: Comm: swapper/0 Not tainted 5.19.0-10393-g7c2a8d3ac4c0 #73 pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : lr alloc_pages+0xe8/0x318 Call trace: kmalloc_order_trace+0x68/0x1dc __kmalloc+0x240/0x338 detect_cache_attributes+0xe0/0x56c update_siblings_masks+0x38/0x284 store_cpu_topology+0x78/0x84 smp_prepare_cpus+0x48/0x134 kernel_init_freeable+0xc4/0x14c kernel_init+0x2c/0x1b4 ret_from_fork+0x10/0x20 Fix same changing fw_level integer the error init_cache_level() early case error.