CVE-2023-53310
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-16

Last updated on: 2025-12-01

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-09-16
Last Modified
2025-12-01
Generated
2026-06-16
AI Q&A
2025-09-16
EPSS Evaluated
2026-06-14
NVD
CVE-2023-53310
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.18 (inc) to 6.1.31 (exc)
linux linux_kernel From 6.2 (inc) to 6.3.5 (exc)
linux linux_kernel 6.4
linux linux_kernel 6.4
linux linux_kernel 6.4
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-362 The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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Executive Summary

This vulnerability is a race condition in the Linux kernel's axp288 fuel gauge driver. The function fuel_gauge_external_power_changed() dereferences a pointer (info->bat) that may not have been set yet due to timing between device registration and callback invocation. This can lead to a NULL pointer dereference, causing potential crashes or instability. The fix involves using the passed-in power_supply argument directly, which is always valid, instead of relying on info->bat.

Impact Analysis

This vulnerability can cause a NULL pointer dereference in the Linux kernel, which may lead to kernel crashes or system instability. This could affect system reliability and availability, potentially causing unexpected reboots or failures in power supply monitoring on affected devices.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the axp288_fuel_gauge external_power_changed race condition. The fix ensures that the external_power_changed callback uses a valid power_supply argument, preventing NULL pointer dereference.

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