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Vulnerability record · CVE-2021-3802 · published 29 November 2021

CVE-2021-3802: Udisks project udisks improper input validation vulnerability

UUdisks Project · Udisks

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.

4.2 CVSS 3.1 Medium EPSS 0.84% · top 43.7% CWE-20 · Improper input validation
4.2CVSS 3.1 base score, v2 6.3
0.84%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2021-3802), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.