CVE-2026-45869

Description

In the Linux kernel, the following vulnerability has been resolved: power: supply: wm97xx: Fix NULL pointer dereference in power_supply_changed() In `probe()`, `request_irq()` is called before allocating/registering a `power_supply` handle. If an interrupt is fired between the call to `request_irq()` and `power_supply_register()`, the `power_supply` handle will be used uninitialized in `power_supply_changed()` in `wm97xx_bat_update()` (triggered from the interrupt handler). This will lead to a `NULL` pointer dereference since Fix this racy `NULL` pointer dereference by making sure the IRQ is requested _after_ the registration of the `power_supply` handle. Since the IRQ is the last thing requests in the `probe()` now, remove the error path for freeing it. Instead add one for unregistering the `power_supply` handle when IRQ request fails.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-27 | Updated 2026-05-27 | Assigner Linux

Product status

References

git.kernel.org/...c/3d7b5391bb95505b3581c1fb77150c467ab92864

git.kernel.org/...c/438f9a303ea8b55162b2d5376490c2ab3ec165a0

git.kernel.org/...c/9b7d77cb046b4487e8e511e04e62b6f416ce845c

git.kernel.org/...c/86183153c299e8bb1839e717286d6c6f39508a59

git.kernel.org/...c/93bdf715d33cf5ee01c58e8546c2469c71ce082a

git.kernel.org/...c/c0def811ad8d642dca9b6d31a198cc39f5f90837

git.kernel.org/...c/dfaf235d5a6b60cbf115a14a656946303ad007b7

git.kernel.org/...c/39fe0eac6d755ef215026518985fcf8de9360e9e

cve.org (CVE-2026-45869)

nvd.nist.gov (CVE-2026-45869)

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