In the Linux kernel, the following vulnerability has been resolved:

perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()

dmc620_pmu_init() won't remove the callback added by
cpuhp_setup_state_multi() when platform_driver_register() failed. Remove
the callback by cpuhp_remove_multi_state() in fail path.

Similar to the handling of arm_ccn_init() in commit 26242b330093 ("bus:
arm-ccn: Prevent hotplug callback leak")

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
53c218da220c3619b5befec4674ffa35d590092a affected < b99fbe8d949a99fe456f08c7aad421327685aa50
53c218da220c3619b5befec4674ffa35d590092a affected < af170afa97e50d4169cfaa7ff4ec5d3841182641
53c218da220c3619b5befec4674ffa35d590092a affected < adf7c3bbcc819db6e95b6a61c9822230f0ef4778
53c218da220c3619b5befec4674ffa35d590092a affected < d9f564c966e63925aac4ba273a9319d7fb6f4b4e
Linux Linux affected
Version Status Constraints
5.11 affected —
0 unaffected < 5.11
5.15.86 unaffected ≤ 5.15.*
6.0.16 unaffected ≤ 6.0.*
6.1.2 unaffected ≤ 6.1.*
6.2 unaffected ≤ *

No data.

No data.

No data.

Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/adf7c3bbcc819db6e95b6a61c9822230f0ef4778 cve-icon cve-icon
https://git.kernel.org/stable/c/af170afa97e50d4169cfaa7ff4ec5d3841182641 cve-icon cve-icon
https://git.kernel.org/stable/c/b99fbe8d949a99fe456f08c7aad421327685aa50 cve-icon cve-icon
https://git.kernel.org/stable/c/d9f564c966e63925aac4ba273a9319d7fb6f4b4e cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025123016-CVE-2022-50820-c3d9@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50820 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50820 cve-icon
History

Wed, 31 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 30 Dec 2025 12:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init() dmc620_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path. Similar to the handling of arm_ccn_init() in commit 26242b330093 ("bus: arm-ccn: Prevent hotplug callback leak")
Title perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-30T12:08:34.894Z

Reserved: 2025-12-30T12:06:07.131Z

Link: CVE-2022-50820

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-30T13:15:56.417

Modified: 2025-12-31T20:43:05.160

Link: CVE-2022-50820

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2022-50820 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.