Live › vulnerability › CVE-2026-98944
Go to dashboardA refactor of the Linux kernel's Steam HID driver streamlines controller registration and fixes a missed unregistration of the battery power_supply object when later steps fail. The sources describe a reliability fix that leaves a stale power supply object after the Steam controller driver is torn down, and do not describe an attacker gaining access.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
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In the Linux kernel, the following vulnerability has been resolved:
HID: steam: Refactor registration
This refactors and simplifies the registration/unregistration flow. Since we now only perform registration when the client isn't opened anymore, the logic for handling that can be removed, and the rest of the function streamlined.
We also remove the previous assumption that we have a serial number to show we're registered, replacing it with a single purpose boolean.
In a previous refactor the code for unregistering a battery if later registration steps failed was accidentally left out. As a result, a lingering power_supply object could get left over after the steam object was torn down. This is also fixed here.
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