CVE-2024-57984: i3c: dw: Fix use-after-free in dw_i3c_master driver due to race condition
First published: Thu Feb 27 2025(Updated: )
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 ensuring that the work is canceled before proceeding with the cleanup in dw_i3c_common_remove.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.0<6.6.76 | |
| Linux Kernel | >=6.7<6.12.13 | |
| Linux Kernel | >=6.13<6.13.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-57984?
CVE-2024-57984 has been classified with medium severity due to the potential for a use-after-free vulnerability causing system instability.
How do I fix CVE-2024-57984?
To fix CVE-2024-57984, update your Linux kernel to the latest patched version provided by the Linux distribution.
What does CVE-2024-57984 affect?
CVE-2024-57984 affects the Linux kernel, specifically related to the dw_i3c_master driver and its handling of a race condition.
What type of vulnerability is CVE-2024-57984?
CVE-2024-57984 is classified as a use-after-free vulnerability that can lead to unexpected behavior or crashes.
Is CVE-2024-57984 easy to exploit?
Exploiting CVE-2024-57984 requires knowledge of the affected driver and conditions leading to the race condition, making it moderately complex.
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