*** This bug is a security vulnerability ***

Public security bug reported:

Affected package is 'libtiff6'

As of Ubuntu 26.04 Resolute, I expect security update for main packages,
including libtiff6.

More over actual version 4.7.0 is pretty old, and lacks a lot of bugfix
from upstream.

- Security :

CVE-2025-61144 : https://nvd.nist.gov/vuln/detail/cve-2025-61144 ,
affects libtiff 4.7.0 (fixed in 4.7.1)

Among some others also affecting 4.7.0 : CVE-2025-8176, CVE-2025-8177,
CVE-2024-13978, CVE-2025-61143, CVE-2025-61145

- Bugfixes :

Version 4.7.1 has been released on September 12th 2025 - see release
note : http://www.simplesystems.org/libtiff/releases/v4.7.1.html

Version 4.7.2 has been released on June 27th 2026 - see release note :
http://www.simplesystems.org/libtiff/releases/v4.7.2.html

Actual 4.7.0 is unable to process TIFF image that worked well with Ubuntu 24.04 
(libtiff6 4.5.1), e.g. :
- https://gitlab.com/libtiff/libtiff/-/work_items/647 : TIFF produced by 
ancient software Oi/GFS can't be read
- https://gitlab.com/libtiff/libtiff/-/work_items/706 : Tiff image conversion 
with magick no longer works with tiff:ignore-tags
- https://gitlab.com/libtiff/libtiff/-/merge_requests/668 : TIFFMergeFieldInfo 
can no longer be used to ignore tags

I expect at least libtiff6 4.7.1 could be available through resolute-update
Would be great to also have libtiff6 4.7.2 available through resolute-backport

** Affects: libtiff
     Importance: Unknown
         Status: Unknown

** Affects: tiff (Ubuntu)
     Importance: Undecided
         Status: New

** Information type changed from Private Security to Public Security

** Bug watch added: Debian Bug tracker #1149347
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1149347

** Also affects: libtiff via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1149347
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/2170083

Title:
  outdated libtiff6 vulnerable to critical CVE

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