CVE-2026-93200

In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix use-after-free of master->this sysfs attribute callbacks for the master controller device dereference master->this. However, master->this is freed in i3c_master_detach_free_devs() before the master device itself is released. As a result, sysfs accesses can dereference a freed master->this pointer, leading to a use-after-free. Keep master->this alive until i3c_masterdev_release(), which is called after the master device and its sysfs state are being torn down. Do not free master->this as part of the normal device detach path. On the error path in i3c_master_set_info(), reset master->this and bus.cur_master to NULL before freeing the allocated device.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/4f3145db05fede36b35f8249b8acde5bd5d54864
https://git.kernel.org/stable/c/50034d8d0f797c3a7a599f750a7d3e792e80dea5
https://git.kernel.org/stable/c/feb0ed76601f3c2f91f08688c5a7d8b9d382f720

Configurations

No configuration.

History

17 Sep 2026, 17:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:18

Updated : 2026-09-17 17:18

NVD link : CVE-2026-93200

Mitre link : CVE-2026-93200

CVE.ORG link : CVE-2026-93200

JSON object : View

Products Affected

No product.

CWE

No CWE.

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