In the Linux kernel, the following vulnerability has been resolved: media: venus: fix use after free bug in venus_remove due to race condition in venus_probe, core->work is bound with venus_sys_error_handler, which is used to handle error. The code use core->sys_err_done to make sync work. The core->work is started in venus_event_notify. If we call venus_remove, there might be an unfished work. The possible sequence is as follows: CPU0 CPU1 |venus_sys_error_handler venus_remove | hfi_destroy | venus_hfi_destroy | kfree(hdev); | |hfi_reinit |venus_hfi_queues_reinit |//use hdev Fix it by canceling the work in venus_remove.
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | 12.2(4)YA9 |
| Linux | Linux | 12.2(4)YA8 |
| Linux | Linux | 7 for 32-bit Systems Service Pack 1 |
| Linux | Linux | 8.1 for x64-based systems |