In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event. CREATE(Triage):(User=admin) [CVE-2020-27153|https://nvd.nist.gov/vuln/detail/CVE-2020-27153]