Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 30abb3d07929137bf72327560e1595508a692c4e before 0456b912121e45b3ef54abe3135e5dcb541f956c; affected 30abb3d07929137bf72327560e1595508a692c4e before a636c6ba9ce898207f283271cb28511206ab739b; affected 30abb3d07929137bf72327560e1595508a692c4e before f8319774d6f1567d6e7d03653174ab0c82c5c66d |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 6.1.31 through 6.1.*; unaffected 6.3.5 through 6.3.*; unaffected 6.4 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0456b912121e45b3ef54abe3135e5dcb541f956c
- https://git.kernel.org/stable/c/a636c6ba9ce898207f283271cb28511206ab739b
- https://git.kernel.org/stable/c/f8319774d6f1567d6e7d03653174ab0c82c5c66d
ADP enrichment
No English description supplied.
No references supplied.