CVE-2022-50820

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

N/A
Published: December 30, 2025 at 12:08 PM UTC
Updated: June 17, 2026 at 05:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

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")

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.11 ≤ v < 5.15.865.11 ≤ v < 6.0.165.11 ≤ v < 6.1.25.11 ≤ v < 6.25.1153c218da220c3619b5befec4674ffa35d590092a
Vendor states this is fixed in adf7c3bbcc819db6e95b6a61c9822230f0ef4778 (fixed)
Vendor states this is fixed in af170afa97e50d4169cfaa7ff4ec5d3841182641 (fixed)
Vendor states this is fixed in b99fbe8d949a99fe456f08c7aad421327685aa50 (fixed)
Vendor states this is fixed in d9f564c966e63925aac4ba273a9319d7fb6f4b4e (fixed)
Vendor states this is fixed in 5.11 (unaffected)
Vendor states this is fixed in 5.15.86 (unaffected)
Vendor states this is fixed in 6.0.16 (unaffected)
Vendor states this is fixed in 6.1.2 (unaffected)
Vendor states this is fixed in 6.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

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