CVE catalog

CVE-2019-18874

python-psutil: CVE-2019-18874

Severity: High · CVSS 7CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Nov 7, 2019, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 3.52% · Oct 27, 2026

psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a while or for loop that converts system data into a Python object.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	python-psutil	sid	`7.2.2-3`	fixed
Debian	python-psutil	forky	`7.1.0-1`	fixed
Debian	python-psutil	trixie	`7.0.0-2`	fixed
Debian	python-psutil	bookworm	`5.9.4-1`	fixed
Alpine	py3-psutil	3.23	`5.6.7-r0`	fixed
Alpine	py3-psutil	3.24	`5.6.7-r0`	fixed
Ubuntu	python-psutil	16.04	`2.2.1-3`	vulnerable
Ubuntu	python-psutil	16.04	`3.4.1-1`	vulnerable
Ubuntu	python-psutil	16.04	`3.4.2-1`	vulnerable
Ubuntu	python-psutil	16.04	`3.4.2-1ubuntu0.1`	fixed
Ubuntu	python-psutil	18.04	`5.0.1-1build2`	vulnerable
Ubuntu	python-psutil	18.04	`5.4.1-1`	vulnerable
Ubuntu	python-psutil	18.04	`5.4.2-1`	vulnerable
Ubuntu	python-psutil	18.04	`5.4.2-1ubuntu0.1`	fixed
Ubuntu	python-psutil	16.04	`2.2.1-3`	vulnerable
Ubuntu	python-psutil	16.04	`3.4.1-1`	vulnerable
Ubuntu	python-psutil	16.04	`3.4.2-1`	vulnerable
Ubuntu	python-psutil	16.04	`3.4.2-1ubuntu0.1`	fixed
Ubuntu	python-psutil	18.04	`5.0.1-1build2`	vulnerable
Ubuntu	python-psutil	18.04	`5.4.1-1`	vulnerable
Ubuntu	python-psutil	18.04	`5.4.2-1`	vulnerable
Ubuntu	python-psutil	18.04	`5.4.2-1ubuntu0.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python-psutil	source	sid	`5.6.7-1`	low	Not reported	[944605]
Debian	python-psutil	source	forky	`5.6.7-1`	low	Not reported	[944605]
Debian	python-psutil	source	trixie	`5.6.7-1`	low	Not reported	[944605]
Debian	python-psutil	source	bookworm	`5.6.7-1`	low	Not reported	[944605]
Alpine	py3-psutil	apk	3.23	`5.6.7-r0`	Not reported	ALPINE-CVE-2019-18874	Not reported
Alpine	py3-psutil	apk	3.24	`5.6.7-r0`	Not reported	ALPINE-CVE-2019-18874	Not reported
Ubuntu	python-psutil	deb	16.04	`3.4.2-1ubuntu0.1`	Not reported	USN-4204-1	Not reported
Ubuntu	python-psutil	deb	18.04	`5.4.2-1ubuntu0.1`	Not reported	USN-4204-1	Not reported
Ubuntu	python-psutil	deb	16.04	`3.4.2-1ubuntu0.1`	Not reported	UBUNTU-CVE-2019-18874	Not reported
Ubuntu	python-psutil	deb	18.04	`5.4.2-1ubuntu0.1`	Not reported	UBUNTU-CVE-2019-18874	Not reported

[Debian bug #944605]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[python3-psutil]Fixed
Source package: [python-psutil]
Details (2)
- 5.9.4-1+b1 · amd64 · bookworm
  Fixed · Fixed: 5.6.7-1
  dsa · python-psutil · debian · bookworm; dsa · python-psutil · debian · 12
- 5.9.4-1+b1 · arm64 · bookworm
  Fixed · Fixed: 5.6.7-1
  dsa · python-psutil · debian · bookworm; dsa · python-psutil · debian · 12
[python-psutil-doc]Fixed
Source package: [python-psutil]
Details (2)
- 5.9.4-1 · all · bookworm
  Fixed · Fixed: 5.6.7-1
  dsa · python-psutil · debian · bookworm; dsa · python-psutil · debian · 12
- 5.9.4-1 · all · bookworm
  Fixed · Fixed: 5.6.7-1
  dsa · python-psutil · debian · bookworm; dsa · python-psutil · debian · 12

[Debian 13 (Trixie)]

[python3-psutil]Fixed
Source package: [python-psutil]
Details (2)
- 7.0.0-2 · amd64 · trixie
  Fixed · Fixed: 5.6.7-1
  dsa · python-psutil · debian · 13
- 7.0.0-2 · arm64 · trixie
  Fixed · Fixed: 5.6.7-1
  dsa · python-psutil · debian · 13

Observed: Oct 23, 2026, 5:42:12 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]