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[USN-8211-1] Pillow vulnerability

Posted on 27 April 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8211-1
April 27, 2026

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

- Ubuntu 25.10

Summary:

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

Software Description:
- pillow: Python Imaging Library

Details:

It was discovered that Pillow incorrectly handled certain FITS images. An
attacker could possibly use this issue to cause Pillow to consume
resources, leading to a denial of service.

Update instructions:

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

Ubuntu 25.10
python3-pil 11.3.0-1ubuntu1.2
python3-pil.imagetk 11.3.0-1ubuntu1.2

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

References:
https://ubuntu.com/security/notices/USN-8211-1
CVE-2026-40192

Package Information:
https://launchpad.net/ubuntu/+source/pillow/11.3.0-1ubuntu1.2

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