7.5

CVE-2021-3905: canonical ubuntu_linux

CVSS: 7.5v3.1HighModified
AliasesRHBA-2022:0051RHBA-2022:0052RHBA-2022:5792
Published 23-08-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-3905 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.13%
0%100%
Low · +0.13 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 23-08-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

2.13%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

+0.13 pp

From 1.99% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Ovs Issues

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Redhat28 products
  • enterprise_linux_fast_datapath7.0 | 8.0
  • network-scripts-openvswitch2.13< 0:2.13.0-139.el8fdp
  • network-scripts-openvswitch2.15< 0:2.15.0-55.el8fdp
  • network-scripts-openvswitch2.16< 0:2.16.0-86.el8fdp
  • openvswitch2.13< 0:2.13.0-139.el8fdp
Canonical1 product
Fedoraproject1 product
Openvswitch1 product
Ubuntu1 product
  • openvswitch< 2.9.8-0ubuntu0.18.04.2 | < 2.13.3-0ubuntu0.20.04.2 | < 2.17.0~git20220105.0d1ffb7-0ubuntu1

5 vendors · 32 products

References

22 links
Show all 22 references