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THREATINT
PUBLISHED

CVE-2024-49874

i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition



AssignerLinux
Reserved2024-10-21
Published2024-10-21
Updated2024-10-22

Description

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.

Product status

Default status
unaffected

0f74f8b6675c before 4ac637122930
affected

0f74f8b6675c before 4318998892bf
affected

0f74f8b6675c before 27b55724d3f7
affected

0f74f8b6675c before 618507257797
affected

Default status
affected

6.4
affected

Any version before 6.4
unaffected

6.6.55
unaffected

6.10.14
unaffected

6.11.3
unaffected

6.12-rc1
unaffected

References

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

cve.org CVE-2024-49874

nvd.nist.gov CVE-2024-49874

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