{"id":"CVE-2026-98747","published":"2026-10-18T16:17:28.460","lastModified":"2026-10-19T10:19:38.883","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: fix NULL pointer dereference in serial_core_unregister_port()\n\nport->port_dev is NULL when no port device is installed: it is cleared\non teardown, and never set if registration failed before\nserial_core_port_device_add().  serial_core_unregister_port() passes it\nstraight to serial_core_get_ctrl_dev(), which dereferences it:\n\n  KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]\n  RIP: serial_core_unregister_port\n  Call Trace:\n   serial8250_unregister_port\n   serial8250_remove\n   unbind_store\n\nReturn early when there is no port device, and read port->port_dev\nunder port_mutex.\n\nAlso clear port->port_dev on the serial_core_register_port() error\npath, where the port device has already been removed.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/499485a67fbacf4d9afbdb43522388c64f853428","tags":[]},{"url":"https://git.kernel.org/stable/c/54abbb862366dcaf1f22f1e968358147b7d0547d","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}