Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < a9b9cae0bd887ef0d438887f20b0a417491e45f0affected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < 94af669037d129914828a851d8b2a79b4537b73faffected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < e766605a0490723df7b61e6abd0c392889732dd7affected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < 027679d613ea73b8a00831369ec34eea804ce1bdaffected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < 23a1c4288a60e253a05a882bd8928ed61beb4a48affected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < 4f3145db05fede36b35f8249b8acde5bd5d54864affected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < 50034d8d0f797c3a7a599f750a7d3e792e80dea5affected3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to < feb0ed76601f3c2f91f08688c5a7d8b9d382f720affected
Linux Linux
Default version status: affected
5.0affected0 to < 5.0unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.112 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/a9b9cae0bd887ef0d438887f20b0a417491e45f0 ↗
- https://git.kernel.org/stable/c/94af669037d129914828a851d8b2a79b4537b73f ↗
- https://git.kernel.org/stable/c/e766605a0490723df7b61e6abd0c392889732dd7 ↗
- 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 ↗