Debian Security Advisory

DLA-2410-1 bluez -- LTS security update

Date Reported:
21 Oct 2020
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-27153.
More information:

It was discovered that there was a double-free vulnerability in BlueZ, a suite of Bluetooth tools, utilities and daemons.

  • CVE-2020-27153

    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.

For Debian 9 Stretch, these problems have been fixed in version 5.43-2+deb9u3.

We recommend that you upgrade your bluez packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: