A BlueZ security update has been released for Ubuntu Linux 18.04 LTS and 20.04 LTS.
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Ubuntu Security Notice USN-5481-1
June 15, 2022
bluez vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in BlueZ.
Software Description:
- bluez: Bluetooth tools and daemons
Details:
It was discovered that BlueZ incorrectly validated certain capabilities
and lengths when handling the A2DP profile. A remote attacker could use
this issue to cause BlueZ to crash, resulting in a denial of service, or
possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
bluez 5.53-0ubuntu3.6
libbluetooth3 5.53-0ubuntu3.6
Ubuntu 18.04 LTS:
bluez 5.48-0ubuntu3.9
libbluetooth3 5.48-0ubuntu3.9
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5481-1
https://launchpad.net/bugs/1977968
Package Information:
https://launchpad.net/ubuntu/+source/bluez/5.53-0ubuntu3.6
https://launchpad.net/ubuntu/+source/bluez/5.48-0ubuntu3.9
