Bug 2425006 (CVE-2023-54047)

Summary: CVE-2023-54047 kernel: drm/rockchip: dw_hdmi: cleanup drm encoder during unbind
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-12-24 13:01:21 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/rockchip: dw_hdmi: cleanup drm encoder during unbind

This fixes a use-after-free crash during rmmod.

The DRM encoder is embedded inside the larger rockchip_hdmi,
which is allocated with the component. The component memory
gets freed before the main drm device is destroyed. Fix it
by running encoder cleanup before tearing down its container.

[moved encoder cleanup above clk_disable, similar to bind-error-path]
Comment 1 Alexander B 2025-12-25 09:27:46 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122423-CVE-2023-54047-42ff@gregkh/T