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CVE-2026-45869

5.5 · MEDIUM

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 al…

Published May 27, 2026CWE-476EPSS 0.16%

Overview

CVE-2026-45869 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/39fe0eac6d755ef215026518985fcf8de9360e9eRefgit.kernel.org/stable/c/3d7b5391bb95505b3581c1fb77150c467ab92864Refgit.kernel.org/stable/c/438f9a303ea8b55162b2d5376490c2ab3ec165a0Refgit.kernel.org/stable/c/86183153c299e8bb1839e717286d6c6f39508a59Refgit.kernel.org/stable/c/93bdf715d33cf5ee01c58e8546c2469c71ce082aRefgit.kernel.org/stable/c/9b7d77cb046b4487e8e511e04e62b6f416ce845cRefgit.kernel.org/stable/c/c0def811ad8d642dca9b6d31a198cc39f5f90837Refgit.kernel.org/stable/c/dfaf235d5a6b60cbf115a14a656946303ad007b7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45869?

CVE-2026-45869 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-45869?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-45869?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45869?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45869 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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