power: supply: axp288_fuel_gauge: Fix external_power_changed race

{
  "id": "57c5d591b8e68bbc1c5152bfb7b9ce457f388e10c84d1e95a8d3b0ec8f5a3b69",
  "url": "https://osv.dev/vulnerability/CVE-2023-53310",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "power: supply: axp288_fuel_gauge: Fix external_power_changed race",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: power: supply: axp288_fuel_gauge: Fix external_power_changed race fuel_gauge_external_power_changed() dereferences info->bat, which gets sets in axp288_fuel_gauge_probe() like this: info->bat = devm_power_supply_register(dev, &fuel_gauge_desc, &psy_cfg); As soon as devm_power_supply_register() has called device_add() the external_power_changed callback can get called. So there is a window where fuel_gauge_external_power_changed() may get called while info->bat has not been set yet leading to a NULL pointer dereference. Fixing this is easy. The external_power_changed callback gets passed the power_supply which will eventually get stored in info->bat, so fuel_gauge_external_power_changed() can simply directly use the passed in psy argument which is always valid.",
    "evidence": "osv:CVE-2023-53310",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.31",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-53310",
      "aliases": [
        "CVE-2023-53310"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
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              "type": "GIT",
              "events": [
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                  "fixed": "0456b912121e45b3ef54abe3135e5dcb541f956c"
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                {
                  "fixed": "a636c6ba9ce898207f283271cb28511206ab739b"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53310.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.18.0"
                },
                {
                  "fixed": "6.1.31"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.3.5"
                }
              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53310.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.410611920Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0456b912121e45b3ef54abe3135e5dcb541f956c",
        "https://git.kernel.org/stable/c/a636c6ba9ce898207f283271cb28511206ab739b",
        "https://git.kernel.org/stable/c/f8319774d6f1567d6e7d03653174ab0c82c5c66d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53310.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53310",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53310.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53310",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507891,
  "published_at": "2025-09-16T16:11:48.399+00:00"
}