It was discovered that BlueZ incorrectly checked certain permissions when pairing. A local attacker could possibly use this issue to impersonate devices. (CVE-2020-26558)
Jay LV discovered that BlueZ incorrectly handled redundant disconnect MGMT events. A local attacker could use this issue to cause BlueZ to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-27153)
Ziming Zhang discovered that BlueZ incorrectly handled certain array indexes. A local attacker could use this issue to cause BlueZ to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2021-3588)
{ "availability": "No subscription required", "binaries": [ { "libbluetooth3": "5.48-0ubuntu3.5", "bluetooth": "5.48-0ubuntu3.5", "bluez-hcidump": "5.48-0ubuntu3.5", "bluez-cups": "5.48-0ubuntu3.5", "bluez-tests": "5.48-0ubuntu3.5", "libbluetooth3-dbg": "5.48-0ubuntu3.5", "bluez-dbg": "5.48-0ubuntu3.5", "libbluetooth-dev": "5.48-0ubuntu3.5", "bluez": "5.48-0ubuntu3.5", "bluez-obexd": "5.48-0ubuntu3.5" } ] }
{ "availability": "No subscription required", "binaries": [ { "libbluetooth3": "5.53-0ubuntu3.2", "bluetooth": "5.53-0ubuntu3.2", "bluez-hcidump": "5.53-0ubuntu3.2", "bluez-cups": "5.53-0ubuntu3.2", "bluez-tests": "5.53-0ubuntu3.2", "libbluetooth3-dbg": "5.53-0ubuntu3.2", "bluez-dbg": "5.53-0ubuntu3.2", "libbluetooth-dev": "5.53-0ubuntu3.2", "bluez": "5.53-0ubuntu3.2", "bluez-obexd": "5.53-0ubuntu3.2" } ] }