CVE-2022-50820 (GCVE-0-2022-50820)
Vulnerability from cvelistv5
Published
2025-12-30 12:08
Modified
2025-12-30 12:08
Severity ?
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")
References
Impacted products
Vendor Product Version
Linux Linux Version: 53c218da220c3619b5befec4674ffa35d590092a
Version: 53c218da220c3619b5befec4674ffa35d590092a
Version: 53c218da220c3619b5befec4674ffa35d590092a
Version: 53c218da220c3619b5befec4674ffa35d590092a
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/perf/arm_dmc620_pmu.c"
          ],
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          "vendor": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.11"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "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": "2025-12-30T12:08:34.894Z",
        "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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        },
        {
          "url": "https://git.kernel.org/stable/c/d9f564c966e63925aac4ba273a9319d7fb6f4b4e"
        }
      ],
      "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": "2025-12-30T12:08:34.894Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50820\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:15:56.417\",\"lastModified\":\"2025-12-31T20:43:05.160\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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\\\")\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/adf7c3bbcc819db6e95b6a61c9822230f0ef4778\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/af170afa97e50d4169cfaa7ff4ec5d3841182641\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b99fbe8d949a99fe456f08c7aad421327685aa50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d9f564c966e63925aac4ba273a9319d7fb6f4b4e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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