Debian Security Advisory

DLA-2899-1 policykit-1 -- LTS security update

Date Reported:
25 Jan 2022
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-4034.
More information:

The Qualys Research Labs discovered a local privilege escalation in PolicyKit's pkexec.

Details can be found in the Qualys advisory at

For Debian 9 stretch, this problem has been fixed in version 0.105-18+deb9u2.

We recommend that you upgrade your policykit-1 packages.

For the detailed security status of policykit-1 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: