{"id":"CVE-2025-38071","state":"PUBLISHED","title":"x86/mm: Check return value from memblock_phys_alloc_range()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Check return value from memblock_phys_alloc_range()\n\nAt least with CONFIG_PHYSICAL_START=0x100000, if there is < 4 MiB of\ncontiguous free memory available at this point, the kernel will crash\nand burn because memblock_phys_alloc_range() returns 0 on failure,\nwhich leads memblock_phys_free() to throw the first 4 MiB of physical\nmemory to the wolves.\n\nAt a minimum it should fail gracefully with a meaningful diagnostic,\nbut in fact everything seems to work fine without the weird reserve\nallocation.","publishedAt":"2025-06-18T09:33:47.975Z","updatedAt":"2026-10-15T01:06:27.679Z","severity":null,"assigner":"Linux","products":["Linux 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