CVE-2022-50210 Details
Description
In the Linux kernel, the following vulnerability has been resolved: MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS is selected, cpu_max_bits_warn() generates a runtime warning similar as below while we show /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit) instead of NR_CPUS to iterate CPUs. [ 3.052463] ------------[ cut here ]------------ [ 3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0 [ 3.070072] Modules linked in: efivarfs autofs4 [ 3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052 [ 3.084034] Hardware name: Loongson Loongson-3A4000-7A1000-1w-V0.1-CRB/Loongson-LS3A4000-7A1000-1w-EVB-V1.21, BIOS Loongson-UDK2018-V2.0.04082-beta7 04/27 [ 3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000 [ 3.109127] 9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430 [ 3.118774] 90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff [ 3.128412] 0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890 [ 3.138056] 0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa [ 3.147711] ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000 [ 3.157364] 900000000101c998 0000000000000004 9000000000ef7430 0000000000000000 [ 3.167012] 0000000000000009 000000000000006c 0000000000000000 0000000000000000 [ 3.176641] 9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286 [ 3.186260] 00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c [ 3.195868] ... [ 3.199917] Call Trace: [ 3.203941] [<98000000002086d8>] show_stack+0x38/0x14c [ 3.210666] [<9800000000cf846c>] dump_stack_lvl+0x60/0x88 [ 3.217625] [<980000000023d268>] __warn+0xd0/0x100 [ 3.223958] [<9800000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc [ 3.231150] [<9800000000210220>] show_cpuinfo+0x5e8/0x5f0 [ 3.238080] [<98000000004f578c>] seq_read_iter+0x354/0x4b4 [ 3.245098] [<98000000004c2e90>] new_sync_read+0x17c/0x1c4 [ 3.252114] [<98000000004c5174>] vfs_read+0x138/0x1d0 [ 3.258694] [<98000000004c55f8>] ksys_read+0x70/0x100 [ 3.265265] [<9800000000cfde9c>] do_syscall+0x7c/0x94 [ 3.271820] [<9800000000202fe4>] handle_syscall+0xc4/0x160 [ 3.281824] ---[ end trace 8b484262b4b8c24c ]---
A vulnerability in the Linux kernel's MIPS architecture has been addressed. When both CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are enabled, the 'cpu_max_bits_warn()' function triggers a runtime warning while '/proc/cpuinfo' is being displayed. This issue arises because the function iterates over CPUs using the constant 'NR_CPUS' instead of the runtime limit 'nr_cpu_ids'. The warning can be seen in the kernel log, indicating the source of the problem and the hardware details.
The vulnerability has been fixed in the official Linux kernel repository. Users should upgrade to the latest version.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/274e44e2123417e0924c90d4b4531913b5f3aa2e | kernel.org | Patch |
| https://git.kernel.org/stable/c/4cb392956ae392aec4aa06e661a0bb9146b0bace | kernel.org | Patch |
| https://git.kernel.org/stable/c/7d305823e02217b29d41fca67e3cef87fd7bd688 | kernel.org | Patch |
| https://git.kernel.org/stable/c/807adf6ffa8c3beedcd63b20f5a59c7d061df7d2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8916ec149c79cb21f5454fa7840ad96f99cf51cf | kernel.org | Patch |
| https://git.kernel.org/stable/c/98aaa511957667ba26d6dabe28dfa210a8f53a63 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d3ac4e47510ec0753ebe1e418a334ad202784aa8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e1a534f5d074db45ae5cbac41d8912b98e96a006 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e41db8a9ce696a3382a4f098878fd4d14bccd201 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | < 4.9.326 >= 4.10, < 4.14.291 >= 4.15, < 4.19.256 >= 4.20, < 5.4.211 >= 5.5, < 5.10.137 >= 5.11, < 5.15.61 >= 5.16, < 5.18.18 >= 5.19, < 5.19.2 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Nov 19, 2025 | Initial Analysis | [email protected] |
| Jun 18, 2025 | New CVE Received | kernel.org |