Debian Security Advisory

DLA-2755-1 btrbk -- LTS security update

Date Reported:
05 Sep 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-38173.
More information:

An issue has been found in btrbk, a backup tool for btrfs subvolumes. Due to mishandling of remote hosts filtering SSH commands using in authorized_keys an arbitrary code execution would have been allowed.

For Debian 9 stretch, this problem has been fixed in version 0.24.0-1+deb9u1.

We recommend that you upgrade your btrbk packages.

For the detailed security status of btrbk please refer to its security tracker page at:

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