CVE-2026-80954

Summary

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

i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()

i3c_device_get_supported_xfer_mode() uses dev->desc to obtain the master controller. However, dev->desc must not be dereferenced unless bus->lock is held, and this function does not take that lock.

The function only needs access to the master controller associated with the device's bus. Use dev->bus instead, which is always valid for the lifetime of the device and does not require dereferencing dev->desc.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969
• https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385

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