Bug 2525446 (CVE-2026-80658)

Summary: CVE-2026-80658 kernel: drm/rockchip: dw_dp: Fix null-ptr-deref in dw_dp_remove()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
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 `drm/rockchip: dw_dp` component of the Linux kernel. This vulnerability occurs when the platform driver's `remove()` callback attempts to access driver data before it has been properly initialized by the `bind()` callback. This can lead to a null pointer dereference, potentially causing a system crash and resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-08-28 07:45:24 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/rockchip: dw_dp: Fix null-ptr-deref in dw_dp_remove()

Attempting to access driver data in the platform driver ->remove()
callback may lead to a null pointer dereference since there is no
guaranty that the component ->bind() callback invoking
platform_set_drvdata() was executed.

A common scenario is when Rockchip DRM driver didn't manage to run
component_bind_all() because of an (unrelated) error causing early
return from rockchip_drm_bind().

Drop the unnecessary call to platform_get_drvdata() and, instead,
reference the target device structure via platform_device.
Comment 1 gkamathe 2026-09-01 10:41:00 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082845-CVE-2026-80658-6760@gregkh/T