Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 before 027679d613ea73b8a00831369ec34eea804ce1bd; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 before 23a1c4288a60e253a05a882bd8928ed61beb4a48; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 before 4f3145db05fede36b35f8249b8acde5bd5d54864; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 before 50034d8d0f797c3a7a599f750a7d3e792e80dea5; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 before feb0ed76601f3c2f91f08688c5a7d8b9d382f720 |
| Linux / Linux | affected 5.0; unaffected 0 before 5.0; unaffected 6.6.160 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/027679d613ea73b8a00831369ec34eea804ce1bd
- https://git.kernel.org/stable/c/23a1c4288a60e253a05a882bd8928ed61beb4a48
- https://git.kernel.org/stable/c/4f3145db05fede36b35f8249b8acde5bd5d54864
- https://git.kernel.org/stable/c/50034d8d0f797c3a7a599f750a7d3e792e80dea5
- https://git.kernel.org/stable/c/feb0ed76601f3c2f91f08688c5a7d8b9d382f720