[USN-8709-1] ncurses vulnerability

[noreply+usn-bot at canonical.com]

==========================================================================
Ubuntu Security Notice USN-8709-1
September 01, 2026

ncurses vulnerability
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

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

Software Description:
- ncurses: shared libraries for terminal handling

Details:

It was discovered that ncurses incorrectly handled specially crafted
terminfo database entries. A local attacker could possibly use this issue
to cause applications using ncurses to crash, resulting in a denial of
service.

Update instructions:

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

Ubuntu 24.04 LTS
  libncurses6                     6.4+20240113-1ubuntu2.2
  libtinfo6                       6.4+20240113-1ubuntu2.2
  ncurses-bin                     6.4+20240113-1ubuntu2.2

Ubuntu 22.04 LTS
  libncurses5                     6.3-2ubuntu0.3
  libncurses6                     6.3-2ubuntu0.3
  libtinfo5                       6.3-2ubuntu0.3
  libtinfo6                       6.3-2ubuntu0.3
  ncurses-bin                     6.3-2ubuntu0.3

Ubuntu 20.04 LTS
  libncurses5                     6.2-0ubuntu2.1+esm2
                                  Available with Ubuntu Pro
  libncurses6                     6.2-0ubuntu2.1+esm2
                                  Available with Ubuntu Pro
  libtinfo5                       6.2-0ubuntu2.1+esm2
                                  Available with Ubuntu Pro
  libtinfo6                       6.2-0ubuntu2.1+esm2
                                  Available with Ubuntu Pro
  ncurses-bin                     6.2-0ubuntu2.1+esm2
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libncurses5                     6.1-1ubuntu1.18.04.1+esm4
                                  Available with Ubuntu Pro
  libtinfo5                       6.1-1ubuntu1.18.04.1+esm4
                                  Available with Ubuntu Pro
  ncurses-bin                     6.1-1ubuntu1.18.04.1+esm4
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libncurses5                     6.0+20160213-1ubuntu1+esm7
                                  Available with Ubuntu Pro
  libtinfo5                       6.0+20160213-1ubuntu1+esm7
                                  Available with Ubuntu Pro
  ncurses-bin                     6.0+20160213-1ubuntu1+esm7
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  libncurses5                     5.9+20140118-1ubuntu1+esm7
                                  Available with Ubuntu Pro
  libtinfo5                       5.9+20140118-1ubuntu1+esm7
                                  Available with Ubuntu Pro
  ncurses-bin                     5.9+20140118-1ubuntu1+esm7
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-8709-1
  CVE-2025-6141

Package Information:
  https://launchpad.net/ubuntu/+source/ncurses/6.4+20240113-1ubuntu2.2
  https://launchpad.net/ubuntu/+source/ncurses/6.3-2ubuntu0.3
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