A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free(). CREATE(Triage):(User=admin) CVE-2020-27784 (https://nvd.nist.gov/vuln/detail/CVE-2020-27784)
