1. Ubuntu Security Notices
  2. USN-5304-1

USN-5304-1: PolicyKit vulnerability

Publication date

28 February 2022

Overview

policykit-1 could be made to crash if it received specially crafted data.

Releases

Packages

  • policykit-1 - framework for managing administrative policies and privileges

Details

Kevin Backhouse discovered that PolicyKit incorrectly handled file
descriptors. A local attacker could possibly use this issue to cause
PolicyKit to crash, resulting in a denial of service.

Kevin Backhouse discovered that PolicyKit incorrectly handled file
descriptors. A local attacker could possibly use this issue to cause
PolicyKit to crash, resulting in a denial of service.

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 policykit-1 –  0.105-31ubuntu0.2
20.04 focal policykit-1 –  0.105-26ubuntu1.3

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›