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USN-5304-1: PolicyKit vulnerability

28 February 2022

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



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


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

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 20.04

In general, a standard system update will make all the necessary changes.