Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Ubuntu 22.04 LTS ClamAV Critical HTML Crash DoS USN-8207-1

ubuntu
Calendar Grey April 27, 2026
Dist Ubuntu Esm H88
ClamAV on Ubuntu is vulnerable to a denial of service from crafted HTML files. Update to prevent crashes.
ClamAV could be made to crash if it opened a specially crafted HTML file.

Summary

ClamAV could be made to crash if it opened a specially crafted HTML file.

Software Description:

- clamav: Anti-virus utility for Unix

Details:

It was discovered that ClamAV incorrectly handled certain HTML files. A

remote attacker could possibly use this issue to cause ClamAV to crash,

resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu html crash clamav

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  clamav                          1.4.4+dfsg-0ubuntu0.25.10.1

Ubuntu 24.04 LTS
  clamav                          1.4.4+dfsg-0ubuntu0.24.04.1

Ubuntu 22.04 LTS
  clamav                          1.4.4+dfsg-0ubuntu0.22.04.1

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References

https://ubuntu.com/security/notices/USN-8207-1

CVE-2026-20031

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8207-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu html crash clamav

Package Information

https://launchpad.net/ubuntu/+source/clamav/1.4.4+dfsg-0ubuntu0.25.10.1
https://launchpad.net/ubuntu/+source/clamav/1.4.4+dfsg-0ubuntu0.24.04.1
https://launchpad.net/ubuntu/+source/clamav/1.4.4+dfsg-0ubuntu0.22.04.1

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here