CVE-2024-53181

In the Linux kernel, the following vulnerability has been resolved: um: vector: Do not use drvdata in release The drvdata is not available in release. Let's just use container_of() to get the vector_device instance. Otherwise, removing a vector device will result in a crash: RIP: 0033:vector_device_release+0xf/0x50 RSP: 00000000e187bc40 EFLAGS: 00010202 RAX: 0000000060028f61 RBX: 00000000600f1baf RCX: 00000000620074e0 RDX: 000000006220b9c0 RSI: 0000000060551c80 RDI: 0000000000000000 RBP: 00000000e187bc50 R08: 00000000603ad594 R09: 00000000e187bb70 R10: 000000000000135a R11: 00000000603ad422 R12: 00000000623ae028 R13: 000000006287a200 R14: 0000000062006d30 R15: 00000000623700b6 Kernel panic - not syncing: Segfault with no mm CPU: 0 UID: 0 PID: 16 Comm: kworker/0:1 Not tainted 6.12.0-rc6-g59b723cd2adb #1 Workqueue: events mc_work_proc Stack: 60028f61 623ae028 e187bc80 60276fcd 6220b9c0 603f5820 623ae028 00000000 e187bcb0 603a2bcd 623ae000 62370010 Call Trace: [ ] ? vector_device_release+0x0/0x50 [ ] device_release+0x70/0xba [ ] kobject_put+0xba/0xe7 [ ] put_device+0x19/0x1c [ ] platform_device_put+0x26/0x29 [ ] platform_device_unregister+0x2c/0x2e [ ] vector_remove+0x52/0x58 [ ] ? mconsole_reply+0x0/0x50 [ ] mconsole_remove+0x160/0x1cc [ ] ? strlen+0x0/0x15 [ ] ? __dequeue_entity+0x1a9/0x206 [ ] ? set_next_entity+0x39/0x63 [ ] ? set_next_entity+0x0/0x63 [ ] ? um_set_signals+0x0/0x43 [ ] mc_work_proc+0x77/0x91 [ ] process_scheduled_works+0x1b3/0x2dd [ ] ? assign_work+0x0/0x58 [ ] worker_thread+0x1e9/0x293 [ ] ? set_pf_worker+0x0/0x64 [ ] ? arch_local_irq_save+0x0/0x2d [ ] ? kthread_exit+0x0/0x3a [ ] ? worker_thread+0x0/0x293 [ ] kthread+0x126/0x12b [ ] new_thread_handler+0x85/0xb6