{"id":"CVE-2022-50223","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK\n\nWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS is selected,\ncpu_max_bits_warn() generates a r…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK\n\nWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS is selected,\ncpu_max_bits_warn() generates a r…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.19, < 5.19.2"],"patched":["linux_kernel 5.19.2"],"published":"2025-06-18","updated":"2026-08-15","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-50223","references":[{"url":"https://git.kernel.org/stable/c/28e112afa44ad0814120d41c68fa72372a2cd2c2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/37268c7badd36f5381056d1651a6ee0b63b8ff3c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.0019,"epssPercentile":0.08925,"ingestedAt":"2026-08-15T13:26:45.172Z","slug":"CVE-2022-50223","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK\n\nWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS is selected,\ncpu_max_bits_warn() generates a runtime warning similar as below while\nwe show /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)\ninstead of NR_CPUS to iterate CPUs.\n\n[    3.052463] ------------[ cut here ]------------\n[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0\n[    3.070072] Modules linked in: efivarfs autofs4\n[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052\n[    3.084034] Hardware name: Loongson Loongson-3A5000-7A1000-1w-V0.1-CRB/Loongson-LS3A5000-7A1000-1w-EVB-V1.21, BIOS Loongson-UDK2018-V2.0.04082-beta7 04/27\n[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000\n[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430\n[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff\n[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890\n[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa\n[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000\n[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000\n[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000\n[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286\n[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c\n[    3.195868]         ...\n[    3.199917] Call Trace:\n[    3.203941] [<90000000002086d8>] show_stack+0x38/0x14c\n[    3.210666] [<9000000000cf846c>] dump_stack_lvl+0x60/0x88\n[    3.217625] [<900000000023d268>] __warn+0xd0/0x100\n[    3.223958] [<9000000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc\n[    3.231150] [<9000000000210220>] show_cpuinfo+0x5e8/0x5f0\n[    3.238080] [<90000000004f578c>] seq_read_iter+0x354/0x4b4\n[    3.245098] [<90000000004c2e90>] new_sync_read+0x17c/0x1c4\n[    3.252114] [<90000000004c5174>] vfs_read+0x138/0x1d0\n[    3.258694] [<90000000004c55f8>] ksys_read+0x70/0x100\n[    3.265265] [<9000000000cfde9c>] do_syscall+0x7c/0x94\n[    3.271820] [<9000000000202fe4>] handle_syscall+0xc4/0x160\n[    3.281824] ---[ end trace 8b484262b4b8c24c ]---\n\n## Affected\n\n- `linux_kernel >= 5.19, < 5.19.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.19.2`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}