[USN-4204-1] psutil vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Thu Nov 28 14:19:17 UTC 2019

Ubuntu Security Notice USN-4204-1
November 28, 2019

python-psutil vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


psutil could be made to crash or run programs.

Software Description:
- python-psutil: module providing convenience functions for managing processes


Riccardo Schirone discovered that psutil incorrectly handled certain
reference counting operations. An attacker could use this issue to cause
psutil to crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions:

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

Ubuntu 19.10:
  python-psutil                   5.5.1-1ubuntu0.19.10.1
  python3-psutil                  5.5.1-1ubuntu0.19.10.1

Ubuntu 19.04:
  python-psutil                   5.5.1-1ubuntu0.19.04.1
  python3-psutil                  5.5.1-1ubuntu0.19.04.1

Ubuntu 18.04 LTS:
  python-psutil                   5.4.2-1ubuntu0.1
  python3-psutil                  5.4.2-1ubuntu0.1

Ubuntu 16.04 LTS:
  python-psutil                   3.4.2-1ubuntu0.1
  python3-psutil                  3.4.2-1ubuntu0.1

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


Package Information:

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