In the Linux kernel, the following vulnerability has been resolved:usb: typec: tcpm: fix double-free issue in tcpm_port_unregister_pd()When unregister pd capabilitie in tcpm, KASAN will capture below double-free issue. The root cause is the same capabilitiy will be kfreed twice,the first time is kfreed by pd_capabilities_release() and the second timeis explicitly kfreed by tcpm_port_unregister_pd().[    3.988059] BUG: KASAN: double-free in tcpm_port_unregister_pd+0x1a4/0x3dc[    3.995001] Free of addr ffff0008164d3000 by task kworker/u16:0/10[    4.001206][    4.002712] CPU: 2 PID: 10 Comm: kworker/u16:0 Not tainted 6.8.0-rc5-next-20240220-05616-g52728c567a55 #53[    4.012402] Hardware name: Freescale i.MX8QXP MEK (DT)[    4.017569] Workqueue: events_unbound deferred_probe_work_func[    4.023456] Call trace:[    4.025920]  dump_backtrace+0x94/0xec[    4.029629]  show_stack+0x18/0x24[    4.032974]  dump_stack_lvl+0x78/0x90[    4.036675]  print_report+0xfc/0x5c0[    4.040289]  kasan_report_invalid_free+0xa0/0xc0[    4.044937]  __kasan_slab_free+0x124/0x154[    4.049072]  kfree+0xb4/0x1e8[    4.052069]  tcpm_port_unregister_pd+0x1a4/0x3dc[    4.056725]  tcpm_register_port+0x1dd0/0x2558[    4.061121]  tcpci_register_port+0x420/0x71c[    4.065430]  tcpci_probe+0x118/0x2e0To fix the issue, this will remove kree() from tcpm_port_unregister_pd().
CWE-415 Double Free