Ubuntu alert USN-8407-1 (strongswan)

From:
             
 
noreply+usn-bot--- via ubuntu-security-announce <ubuntu-security-announce@lists.ubuntu.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-8407-1] strongSwan vulnerability
Date:
             
 
Mon, 08 Jun 2026 20:31:13 +0000
Message-ID:
             
 
<E1wWgcr-0007Mi-7i@lists.ubuntu.com>
Cc:
             
 
noreply+usn-bot@canonical.com
==========================================================================
Ubuntu Security Notice USN-8407-1
June 08, 2026

strongswan 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:

strongSwan could be made to crash or run programs if it received specially
crafted network traffic.

Software Description:
- strongswan: IPsec VPN solution

Details:

Elliott Childre discovered that strongSwan incorrectly handled the cloning
of certain identities. A remote attacker could use this issue to cause
strongSwan to crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions:

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

Ubuntu 26.04 LTS
  libstrongswan                   6.0.4-1ubuntu3.1
  strongswan                      6.0.4-1ubuntu3.1

Ubuntu 25.10
  libstrongswan                   6.0.1-6ubuntu4.4
  strongswan                      6.0.1-6ubuntu4.4

Ubuntu 24.04 LTS
  libstrongswan                   5.9.13-2ubuntu4.24.04.4
  strongswan                      5.9.13-2ubuntu4.24.04.4

Ubuntu 22.04 LTS
  libstrongswan                   5.9.5-2ubuntu2.7
  strongswan                      5.9.5-2ubuntu2.7

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-8407-1
  CVE-2026-47895

Package Information:
  https://launchpad.net/ubuntu/+source/strongswan/6.0.4-1ub...
  https://launchpad.net/ubuntu/+source/strongswan/6.0.1-6ub...
  https://launchpad.net/ubuntu/+source/strongswan/5.9.13-2u...
  https://launchpad.net/ubuntu/+source/strongswan/5.9.5-2ub...


Attachment: signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE-----
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=g9w9
-----END PGP SIGNATURE-----