CVE-2022-50103

Host crash via empty cpuset CPU mask

Published Jun 18, 2025 · Updated May 11, 2026

A denial of service in affected Linux kernel versions allows local users to crash the host through a cgroup v2 cpuset migration. cpuset_can_attach passes an empty cpus_allowed mask to task_can_attach, causing cpumask_any_and to return nr_cpu_ids and dl_bw_of to access an out-of-range per-CPU value. Reaching the panic requires local low-privileged access, permission to change the cpuset, and a cgroup v2 cpuset with an empty configured CPU mask.

CVSS severity7.1
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A denial of service in affected Linux kernel versions allows local users to crash the host through a cgroup v2 cpuset migration. cpuset_can_attach passes an empty cpus_allowed mask to task_can_attach, causing cpumask_any_and to return nr_cpu_ids and dl_bw_of to access an out-of-range per-CPU value. Reaching the panic requires local low-privileged access, permission to change the cpuset, and a cgroup v2 cpuset with an empty configured CPU mask.

The record

CVE
CVE-2022-50103
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.19
  2. Affected versionversion=7f51412a415d87ea8598d14722fb31e4f5701257 <147f66d22f58712dce7ccdd6a1f6cb3ee8042df4
  3. Affected versionversion=7f51412a415d87ea8598d14722fb31e4f5701257 <336626564b58071b8980a4e6a31a8f5d92705d9b
  4. Affected versionversion=7f51412a415d87ea8598d14722fb31e4f5701257 <357f3f0e522a6ce1ce4a571cb780d9861d53bec7
  5. Affected versionversion=7f51412a415d87ea8598d14722fb31e4f5701257 <b6e8d40d43ae4dec00c8fea2593eeea3114b8f44
  6. Affected versionversion=7f51412a415d87ea8598d14722fb31e4f5701257 <f56607b44c9896e51678a7e8cdd3a5479f4b4548

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.19; version=7f51412a415d87ea8598d14722fb31e4f5701257 <147f66d22f58712dce7ccdd6a1f6cb3ee8042df4; version=7f51412a415d87ea8598d14722fb31e4f5701257 <336626564b58071b8980a4e6a31a8f5d92705d9b; version=7f51412a415d87ea8598d14722fb31e4f5701257 <357f3f0e522a6ce1ce4a571cb780d9861d53bec7; version=7f51412a415d87ea8598d14722fb31e4f5701257 <b6e8d40d43ae4dec00c8fea2593eeea3114b8f44; version=7f51412a415d87ea8598d14722fb31e4f5701257 <f56607b44c9896e51678a7e8cdd3a5479f4b4548

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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