5.5

CVE-2021-4115: canonical ubuntu_linux Uncontrolled Resource Consumption

CVSS: 5.5v3.1MediumModified
AliasesMGASA-2022-0080SUSE-SU-2022:0524-1SUSE-SU-2022:0525-1
Published 21-02-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-4115 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in canonical ubuntu_linux. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 21-02-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

0.00 pp

From 0.53% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (gitlab.freedesktop.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Suse11 products
  • polkit&distro=SUSE Enterprise Storage 7< 0.116-3.9.1
  • polkit&distro=SUSE Linux Enterprise Micro 5.0< 0.116-3.9.1
  • polkit&distro=SUSE Linux Enterprise Micro 5.1< 0.116-3.9.1
  • polkit&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 0.116-3.9.1
  • polkit&distro=SUSE Linux Enterprise Real Time 15 SP2< 0.116-3.9.1
Redhat8 products
  • enterprise_linux8.0
  • polkit< 0:0.115-13.el8_5.2
  • polkit-debuginfo< 0:0.115-13.el8_5.2
  • polkit-debugsource< 0:0.115-13.el8_5.2
  • polkit-devel< 0:0.115-13.el8_5.2
Debian2 products
Opensuse2 products
  • polkit&distro=openSUSE Leap 15.3< 0.116-3.9.1
  • polkit&distro=openSUSE Tumbleweed< 0.120-3.1
Canonical1 product
Fedoraproject1 product
Mageia1 product
  • polkit< 0.118-1.3.mga8
Oracle1 product
Polkit_project1 product
Ubuntu1 product
  • policykit-1< 0.105-26ubuntu1.3

10 vendors · 29 products

References

27 links
Show all 27 references