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[USN-8358-1] haveged vulnerability

Posted on 01 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8358-1
June 01, 2026

haveged vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

haveged could be made to run programs as an administrator.

Software Description:
- haveged: userspace entropy daemon

Details:

It was discovered that haveged incorrectly handled credential
checks on its control socket. A local attacker could possibly
use this issue to execute privileged commands.

Update instructions:

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

Ubuntu 26.04 LTS
haveged 1.9.19-14ubuntu0.1
libhavege2 1.9.19-14ubuntu0.1

Ubuntu 25.10
haveged 1.9.19-12+deb13u1build0.25.10.1
libhavege2 1.9.19-12+deb13u1build0.25.10.1

Ubuntu 24.04 LTS
haveged 1.9.14-1ubuntu2+esm1~24.04.1
Available with Ubuntu Pro
libhavege2 1.9.14-1ubuntu2+esm1~24.04.1
Available with Ubuntu Pro

Ubuntu 22.04 LTS
haveged 1.9.14-1ubuntu1+esm1~22.04.1
Available with Ubuntu Pro
libhavege2 1.9.14-1ubuntu1+esm1~22.04.1
Available with Ubuntu Pro

After a standard system update you need to restart haveged to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8358-1
CVE-2026-41054

Package Information:
https://launchpad.net/ubuntu/+source/haveged/1.9.19-14ubuntu0.1
https://launchpad.net/ubuntu/+source/haveged/1.9.19-12+deb13u1build0.25.10.1

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