What’s Vulnerable › Vulnerabilities

CVE-2023-54047: drm/rockchip: dw_hdmi: cleanup drm encoder during unbind

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-24 · updated 2026-06-17

Description

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]

Affected products

• Linux kernel: 4.9 — fixed in 6.4

How to fix

Upgrade to a fixed version: Linux kernel 6.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/110d4202522373d629d14597af9bac97eb58bd67
• https://git.kernel.org/stable/c/218fe9b624545f4bcfb16cdb35ac3d60c8b0d8c7
• https://git.kernel.org/stable/c/b5af48eedcb53491c02ded55d5991e03d6da6dbf

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