CVE-2026-45882

About vulnerability

In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_bms_vm: Fix use-after-free in power_supply_changed() Using the devm_ variant for requesting IRQ before the devm_ variant for allocating/registering the power_supply handle, means that the power_supply handle will be deallocated/unregistered before the interrupt handler (since devm_ naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just after the power_supply handle has been freed, but just before the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling power_supply_changed() with a freed power_supply handle. Which usually crashes the system or otherwise silently corrupts the memory… Note that there is a similar situation which can also happen during probe(); the possibility of an interrupt firing before registering the power_supply handle. This would then lead to the nasty situation of using the power_supply handle uninitialized in power_supply_changed(). Fix this racy use-after-free by making sure the IRQ is requested after the registration of the power_supply handle. A flaw was found in the Linux kernel’s power supply subsystem, specifically in the pm8916_bms_vm driver. A race condition during the deallocation and unregistration of the power_supply handle and its interrupt handler can lead to a use-after-free vulnerability. This allows an interrupt to be processed using a freed or uninitialized power_supply handle. The most important consequence is that this can cause the system to crash or silently corrupt memory.

Live-patch status from KernelCare for each operating system.