[USN-8358-1] haveged vulnerability

[noreply+usn-bot at canonical.com]

==========================================================================
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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