ghsa-c4mr-qx6r-6753
Vulnerability from github
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.
{
"affected": [],
"aliases": [
"CVE-2023-53310"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-16T17:15:36Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: axp288_fuel_gauge: Fix external_power_changed race\n\nfuel_gauge_external_power_changed() dereferences info-\u003ebat,\nwhich gets sets in axp288_fuel_gauge_probe() like this:\n\n info-\u003ebat = devm_power_supply_register(dev, \u0026fuel_gauge_desc, \u0026psy_cfg);\n\nAs soon as devm_power_supply_register() has called device_add()\nthe external_power_changed callback can get called. So there is a window\nwhere fuel_gauge_external_power_changed() may get called while\ninfo-\u003ebat has not been set yet leading to a NULL pointer dereference.\n\nFixing this is easy. The external_power_changed callback gets passed\nthe power_supply which will eventually get stored in info-\u003ebat,\nso fuel_gauge_external_power_changed() can simply directly use\nthe passed in psy argument which is always valid.",
"id": "GHSA-c4mr-qx6r-6753",
"modified": "2025-09-16T18:31:26Z",
"published": "2025-09-16T18:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53310"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0456b912121e45b3ef54abe3135e5dcb541f956c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a636c6ba9ce898207f283271cb28511206ab739b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f8319774d6f1567d6e7d03653174ab0c82c5c66d"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
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Nomenclature
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