CVE-2024-49874: i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition 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: CPU0 CPU1 | svc_i3c_master_hj_work svc_i3c_master_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 svc_i3c_master_remove.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.4<6.6.55 | |
| Linux Kernel | >=6.7<6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/56bddf543d4d7ddeff3f87b554ddacfdf086bffe
- https://git.kernel.org/stable/c/4ac637122930cc4ab7e2c22e364cf3aaf96b05b1
- https://git.kernel.org/stable/c/4318998892bf8fe99f97bea18c37ae7b685af75a
- https://git.kernel.org/stable/c/27b55724d3f781dd6e635e89dc6e2fd78fa81a00
- https://git.kernel.org/stable/c/61850725779709369c7e907ae8c7c75dc7cec4f3
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49874
- https://nvd.nist.gov/vuln/detail/CVE-2024-49874
- https://launchpad.net/bugs/cve/CVE-2024-49874
- https://security-tracker.debian.org/tracker/CVE-2024-49874
- https://ubuntu.com/security/CVE-2024-49874
- https://git.kernel.org/linus/61850725779709369c7e907ae8c7c75dc7cec4f3
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