CVE-2021-3802: Input Validation
First published: Mon Sep 13 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/udisks | <2.9.4 | 2.9.4 |
| udisks | <2.9.4 | |
| Fedoraproject Fedora | =34 | |
| Red Hat Enterprise Linux | =8.0 |
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Reference Links
- 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/show_bug.cgi?id=2003650
- https://creativecommons.org/licenses/by/3.0/deed.en
- https://github.com/storaged-project/udisks/releases/tag/udisks-2.9.4
- https://access.redhat.com/errata/RHSA-2022:1820
- https://access.redhat.com/security/cve/cve-2021-3802
Frequently Asked Questions
What is CVE-2021-3802?
CVE-2021-3802 is a vulnerability found in udisks2 that allows an attacker to input a specially crafted image file or USB leading to kernel panic.
What is the highest threat from CVE-2021-3802?
The highest threat from CVE-2021-3802 is to system availability.
Which software versions are affected by CVE-2021-3802?
Udisks version up to exclusive 2.9.4, Fedora version 34, and Redhat Enterprise Linux version 8.0 are affected by CVE-2021-3802.
How severe is CVE-2021-3802?
CVE-2021-3802 has a severity score of 4.2, indicating a medium severity level.
How can I fix CVE-2021-3802?
To fix CVE-2021-3802, update Udisks2 to version 2.9.5 or later, Fedora to the patched version, or Redhat Enterprise Linux to a fixed version.
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