CVE-2021-3802

Severity: medium (CVSS 4.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-29 · updated 2026-06-17
Weakness: CWE-20

Description

A vulnerability found in udisks2. This flaw allows an attacker to input a specially crafted image file/USB leading to kernel panic. The highest threat from this vulnerability is to system availability.

Affected products

Fedoraproject Fedora: 34
Red Hat Enterprise Linux: 8.0
Udisks Project Udisks: before 2.9.4 — fixed in 2.9.4

How to fix

Upgrade to a fixed version: Udisks Project Udisks 2.9.4. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2003649
https://lists.debian.org/debian-lts-announce/2023/04/msg00009.html
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-045.txt
https://bugzilla.redhat.com/show_bug.cgi?id=2003649
https://lists.debian.org/debian-lts-announce/2023/04/msg00009.html
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-045.txt

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