Bug 2492296 (CVE-2026-53119)

Summary: CVE-2026-53119 kernel: platform/wmi: use generic driver_override infrastructure
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: unspecified    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `platform/wmi` component. A vulnerability exists where a driver's `match()` function can access memory after it has been freed (Use-After-Free), due to improper locking during driver probing. This could allow an attacker to execute arbitrary code or cause the system to crash, leading to a denial of service.
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Description OSIDB Bzimport 2026-06-24 18:04:09 UTC 
In the Linux kernel, the following vulnerability has been resolved:

platform/wmi: use generic driver_override infrastructure

When a driver is probed through __driver_attach(), the bus' match()
callback is called without the device lock held, thus accessing the
driver_override field without a lock, which can cause a UAF.

Fix this by using the driver-core driver_override infrastructure taking
care of proper locking internally.

Note that calling match() from __driver_attach() without the device lock
held is intentional. [1]
Comment 1 Keith Grant 2026-06-25 17:42:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062416-CVE-2026-53119-7d1c@gregkh/T