Packages
- bluez - Bluetooth tools and daemons
Details
It was discovered that BlueZ incorrectly handled the Discoverable status
when a device is powered down. This could result in devices being powered
up discoverable, contrary to expectations. This issue only affected Ubuntu
20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)
It was discovered that BlueZ incorrectly handled certain memory operations.
A remote attacker could possibly use this issue to cause BlueZ to consume
resources, leading to a denial of service. (CVE-2021-41229)
It was discovered that the BlueZ gatt server incorrectly handled
disconnects. A remote attacker could possibly use this issue to cause
BlueZ to crash, leading to a denial of service. (CVE-2021-43400)
It was discovered that BlueZ incorrectly handled the Discoverable status
when a device is powered down. This could result in devices being powered
up discoverable, contrary to expectations. This issue only affected Ubuntu
20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)
It was discovered that BlueZ incorrectly handled certain memory operations.
A remote attacker could possibly use this issue to cause BlueZ to consume
resources, leading to a denial of service. (CVE-2021-41229)
It was discovered that the BlueZ gatt server incorrectly handled
disconnects. A remote attacker could possibly use this issue to cause
BlueZ to crash, leading to a denial of service. (CVE-2021-43400)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 21.10 impish | libbluetooth3 – 5.60-0ubuntu2.1 | ||
| bluez – 5.60-0ubuntu2.1 | |||
| 21.04 hirsute | libbluetooth3 – 5.56-0ubuntu4.3 | ||
| bluez – 5.56-0ubuntu4.3 | |||
| 20.04 focal | libbluetooth3 – 5.53-0ubuntu3.4 | ||
| bluez – 5.53-0ubuntu3.4 | |||
| 18.04 bionic | libbluetooth3 – 5.48-0ubuntu3.6 | ||
| bluez – 5.48-0ubuntu3.6 | |||
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