[USN-8047-1] Pillow vulnerability

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Ubuntu Security Notice USN-8047-1
February 17, 2026

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

- Ubuntu 25.10

Summary:

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

Software Description:
- pillow: Python Imaging Library

Details:

Yarden Porat discovered that Pillow incorrectly handled certain malformed
PSD images. An attacker could use this issue to cause Pillow 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 25.10
python3-pil 11.3.0-1ubuntu1.1

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

References:
https://ubuntu.com/security/notices/USN-8047-1
CVE-2026-25990

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