CVE-2026-45906: In the Linux kernel, the following vulnerability has been resolved: power: supply: pf1550: Fix use-after-free in power_supply_changed() Using the `devm_`…

In the Linux kernel, the following vulnerability has been resolved: power: supply: pf1550: 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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
linux	linux	—	—
linux	linux	>= 4b6b6433a97d5863b5340fc87f866d784fdf0783 < 1bdefeed904f1f17e1f73a4d8a035515f3a9fad8	1bdefeed904f1f17e1f73a4d8a035515f3a9fad8
linux	linux	>= 4b6b6433a97d5863b5340fc87f866d784fdf0783 < 838767f5074700552d3f006d867caed65edc7328	838767f5074700552d3f006d867caed65edc7328
linux	linux_kernel	—	—