CVE-2024-44967 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/mgag200: Bind I2C lifetime to DRM device

Managed cleanup with devm_add_action_or_reset() will release the I2C adapter when the underlying Linux device goes away. But the connector still refers to it so this cleanup leaves behind a stale pointer in struct drm_connector.ddc.

Bind the lifetime of the I2C adapter to the connector’s lifetime by using DRM’s managed release. When the DRM device goes away (after the Linux device) DRM will first clean up the connector and then clean up the I2C adapter.

Reference

https://git.kernel.org/stable/c/55a6916db77102765b22855d3a0add4751988b7c https://git.kernel.org/stable/c/81d34df843620e902dd04aa9205c875833d61c17 https://git.kernel.org/stable/c/9d96b91e03cba9dfcb4ac370c93af4dbc47d5191 https://git.kernel.org/stable/c/eb1ae34e48a09b7a1179c579aed042b032e408f4