fkie_cve-2022-50296
Vulnerability from fkie_nvd
Published
2025-09-15 15:15
Modified
2025-09-15 15:22
Severity ?
Summary
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 ]---
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUM: 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[ 3.099465] 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] [\u003c90000000002086d8\u003e] show_stack+0x38/0x14c\n[ 3.210666] [\u003c9000000000cf846c\u003e] dump_stack_lvl+0x60/0x88\n[ 3.217625] [\u003c900000000023d268\u003e] __warn+0xd0/0x100\n[ 3.223958] [\u003c9000000000cf3c90\u003e] warn_slowpath_fmt+0x7c/0xcc\n[ 3.231150] [\u003c9000000000210220\u003e] show_cpuinfo+0x5e8/0x5f0\n[ 3.238080] [\u003c90000000004f578c\u003e] seq_read_iter+0x354/0x4b4\n[ 3.245098] [\u003c90000000004c2e90\u003e] new_sync_read+0x17c/0x1c4\n[ 3.252114] [\u003c90000000004c5174\u003e] vfs_read+0x138/0x1d0\n[ 3.258694] [\u003c90000000004c55f8\u003e] ksys_read+0x70/0x100\n[ 3.265265] [\u003c9000000000cfde9c\u003e] do_syscall+0x7c/0x94\n[ 3.271820] [\u003c9000000000202fe4\u003e] handle_syscall+0xc4/0x160\n[ 3.281824] ---[ end trace 8b484262b4b8c24c ]---"
}
],
"id": "CVE-2022-50296",
"lastModified": "2025-09-15T15:22:27.090",
"metrics": {},
"published": "2025-09-15T15:15:40.987",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/16c546e148fa6d14a019431436a6f7b4087dbccd"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2e3863cc02c156b51b50592d43ffa6a13b680b0d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/5177bdc38eaa1c1ca6302214ab06913540cd00a2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/6a73e6edcbf3cdd82796dcdf0c0f5fe5d91021af"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7efe61dc6aa45aab8a40e304fa2dae21e33b0db4"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/844748412be03a236dcf4a208b588162a275e189"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/8f96aa67c2ccbd7e41b8dc992b8d13cfe206d571"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/cd251d39b13485eb94ee65bb000d024e02c00e45"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/dbd964a733db015bbb9dff592c259c736398140f"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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