CVE-2022-50296

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50296
In the Linux kernel, the following vulnerability has been resolved: UM: 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 [ 3.099465] 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] [<90000000002086d8>] show_stack+0x38/0x14c [ 3.210666] [<9000000000cf846c>] dump_stack_lvl+0x60/0x88 [ 3.217625] [<900000000023d268>] __warn+0xd0/0x100 [ 3.223958] [<9000000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc [ 3.231150] [<9000000000210220>] show_cpuinfo+0x5e8/0x5f0 [ 3.238080] [<90000000004f578c>] seq_read_iter+0x354/0x4b4 [ 3.245098] [<90000000004c2e90>] new_sync_read+0x17c/0x1c4 [ 3.252114] [<90000000004c5174>] vfs_read+0x138/0x1d0 [ 3.258694] [<90000000004c55f8>] ksys_read+0x70/0x100 [ 3.265265] [<9000000000cfde9c>] do_syscall+0x7c/0x94 [ 3.271820] [<9000000000202fe4>] handle_syscall+0xc4/0x160 [ 3.281824] ---[ end trace 8b484262b4b8c24c ]---

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/16c546e148fa6d14a019431436a6f7b4087dbccd Patch
https://git.kernel.org/stable/c/2e3863cc02c156b51b50592d43ffa6a13b680b0d Patch
https://git.kernel.org/stable/c/5177bdc38eaa1c1ca6302214ab06913540cd00a2 Patch
https://git.kernel.org/stable/c/6a73e6edcbf3cdd82796dcdf0c0f5fe5d91021af Patch
https://git.kernel.org/stable/c/7efe61dc6aa45aab8a40e304fa2dae21e33b0db4 Patch
https://git.kernel.org/stable/c/844748412be03a236dcf4a208b588162a275e189 Patch
https://git.kernel.org/stable/c/8f96aa67c2ccbd7e41b8dc992b8d13cfe206d571 Patch
https://git.kernel.org/stable/c/cd251d39b13485eb94ee65bb000d024e02c00e45 Patch
https://git.kernel.org/stable/c/dbd964a733db015bbb9dff592c259c736398140f Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

04 Dec 2025, 15:34

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/16c546e148fa6d14a019431436a6f7b4087dbccd - () https://git.kernel.org/stable/c/16c546e148fa6d14a019431436a6f7b4087dbccd - Patch
References () https://git.kernel.org/stable/c/2e3863cc02c156b51b50592d43ffa6a13b680b0d - () https://git.kernel.org/stable/c/2e3863cc02c156b51b50592d43ffa6a13b680b0d - Patch
References () https://git.kernel.org/stable/c/5177bdc38eaa1c1ca6302214ab06913540cd00a2 - () https://git.kernel.org/stable/c/5177bdc38eaa1c1ca6302214ab06913540cd00a2 - Patch
References () https://git.kernel.org/stable/c/6a73e6edcbf3cdd82796dcdf0c0f5fe5d91021af - () https://git.kernel.org/stable/c/6a73e6edcbf3cdd82796dcdf0c0f5fe5d91021af - Patch
References () https://git.kernel.org/stable/c/7efe61dc6aa45aab8a40e304fa2dae21e33b0db4 - () https://git.kernel.org/stable/c/7efe61dc6aa45aab8a40e304fa2dae21e33b0db4 - Patch
References () https://git.kernel.org/stable/c/844748412be03a236dcf4a208b588162a275e189 - () https://git.kernel.org/stable/c/844748412be03a236dcf4a208b588162a275e189 - Patch
References () https://git.kernel.org/stable/c/8f96aa67c2ccbd7e41b8dc992b8d13cfe206d571 - () https://git.kernel.org/stable/c/8f96aa67c2ccbd7e41b8dc992b8d13cfe206d571 - Patch
References () https://git.kernel.org/stable/c/cd251d39b13485eb94ee65bb000d024e02c00e45 - () https://git.kernel.org/stable/c/cd251d39b13485eb94ee65bb000d024e02c00e45 - Patch
References () https://git.kernel.org/stable/c/dbd964a733db015bbb9dff592c259c736398140f - () https://git.kernel.org/stable/c/dbd964a733db015bbb9dff592c259c736398140f - Patch
CWE NVD-CWE-noinfo
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

15 Sep 2025, 15:22

Type Values Removed Values Added
New CVE
Information

Published : 2025-09-15 15:15

Updated : 2025-12-04 15:34

NVD link : CVE-2022-50296

Mitre link : CVE-2022-50296

CVE.ORG link : CVE-2022-50296

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo