Home / mailings [USN-7912-1] CUPS vulnerability
Posted on 04 December 2025
Ubuntu Security==========================================================================Ubuntu Security Notice USN-7912-1
December 04, 2025
cups vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
Summary:
CUPS could be made to stop responding if it received specially crafted
network traffic.
Software Description:
- cups: Common UNIX Printing System(tm)
Details:
Johannes Meixner and Paul Zirnik discovered that CUPS incorrectly handled
clients that send messages slowly. A remote attacker could possibly use
this issue to cause CUPS to stop responding, resulting in a denial of
service. (CVE-2025-58436)
In addition, this update fixes a regression introduced in USN-7897-1 which
resulted in certain invalid configuration file directives to cause the CUPS
daemon to fail to start.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
cups 2.4.12-0ubuntu3.5
cups-daemon 2.4.12-0ubuntu3.5
Ubuntu 25.04
cups 2.4.12-0ubuntu1.6
cups-daemon 2.4.12-0ubuntu1.6
Ubuntu 24.04 LTS
cups 2.4.7-1.2ubuntu7.9
cups-daemon 2.4.7-1.2ubuntu7.9
Ubuntu 22.04 LTS
cups 2.4.1op1-1ubuntu4.16
cups-daemon 2.4.1op1-1ubuntu4.16
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7912-1
CVE-2025-58436, https://launchpad.net/bugs/2133207
Package Information:
https://launchpad.net/ubuntu/+source/cups/2.4.12-0ubuntu3.5
https://launchpad.net/ubuntu/+source/cups/2.4.12-0ubuntu1.6
https://launchpad.net/ubuntu/+source/cups/2.4.7-1.2ubuntu7.9
https://launchpad.net/ubuntu/+source/cups/2.4.1op1-1ubuntu4.16
--===============2397949857211955146==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
