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CVE-2022-50820 (GCVE-0-2022-50820)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:08 – Updated: 2026-05-11 19:25
VLAI
Title
perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()
Summary
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")
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 53c218da220c3619b5befec4674ffa35d590092a , < b99fbe8d949a99fe456f08c7aad421327685aa50 (git)
Affected: 53c218da220c3619b5befec4674ffa35d590092a , < af170afa97e50d4169cfaa7ff4ec5d3841182641 (git)
Affected: 53c218da220c3619b5befec4674ffa35d590092a , < adf7c3bbcc819db6e95b6a61c9822230f0ef4778 (git)
Affected: 53c218da220c3619b5befec4674ffa35d590092a , < d9f564c966e63925aac4ba273a9319d7fb6f4b4e (git)
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Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/perf/arm_dmc620_pmu.c"
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()\n\ndmc620_pmu_init() won\u0027t remove the callback added by\ncpuhp_setup_state_multi() when platform_driver_register() failed. Remove\nthe callback by cpuhp_remove_multi_state() in fail path.\n\nSimilar to the handling of arm_ccn_init() in commit 26242b330093 (\"bus:\narm-ccn: Prevent hotplug callback leak\")"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:25:45.031Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/b99fbe8d949a99fe456f08c7aad421327685aa50"
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      "title": "perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()",
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  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50820",
    "datePublished": "2025-12-30T12:08:34.894Z",
    "dateReserved": "2025-12-30T12:06:07.131Z",
    "dateUpdated": "2026-05-11T19:25:45.031Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:09:41+00:00",
      "cve": "CVE-2022-50820",
      "id": "CVE-2022-50820",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50820.json",
      "version": "3"
    }
  }
}



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