CVE-2024-57984

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

i3c: dw: Fix use-after-free in dw_i3c_master driver due to race condition

In dw_i3c_common_probe, &master->hj_work is bound with

dw_i3c_hj_work. And dw_i3c_master_irq_handler can call

dw_i3c_master_irq_handle_ibis function to start the work.

If we remove the module which will call dw_i3c_common_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:

CPU0 CPU1

| dw_i3c_hj_work

dw_i3c_common_remove |

i3c_master_unregister(&master->base) |

device_unregister(&master->dev) |

device_release |

//free master->base |

| i3c_master_do_daa(&master->base)

| //use master->base

Fix it by

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References