Re: [PATCH v3] i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition

On Sun, 15 Sep 2024 00:39:33 +0800, Kaixin Wang wrote:

In the svc_i3c_master_probe function, &master->hj_work is bound with svc_i3c_master_hj_work, &master->ibi_work is bound with svc_i3c_master_ibi_work. And svc_i3c_master_ibi_work can start the hj_work, svc_i3c_master_irq_handler can start the ibi_work.

If we remove the module which will call svc_i3c_master_remove to make cleanup, it will free master->base through i3c_master_unregister while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows:

[...]

Applied, thanks!

[1/1] i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition https://git.kernel.org/abelloni/c/618507257797

Best regards,