openSUSE-SU-2026:21296-1: important: Security update for python-Pillow

openSUSE security update: security update for python-pillow
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Announcement ID: openSUSE-SU-2026:21296-1
Rating: important
References:

  * bsc#1270404
  * bsc#1270409
  * bsc#1270410
  * bsc#1270411
  * bsc#1270412



Cross-References:

  * CVE-2026-42311
  * CVE-2026-54059
  * CVE-2026-54060
  * CVE-2026-55379
  * CVE-2026-55380



CVSS scores:

  * CVE-2026-42311 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-42311 ( SUSE ): 8.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-54059 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-54060 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-55379 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-55380 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

         openSUSE Leap 16.0

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An update that solves 5 vulnerabilities and has 5 bug fixes can now be installed.

Description:

This update for python-Pillow fixes the following issues

- CVE-2026-42311: malicious PSD file processing can lead to arbitrary code execution (bsc#1270404).
- CVE-2026-54059: crafted PCF font data can cause excessive memory allocation (bsc#1270409).
- CVE-2026-54060: fonts can trigger excessive memory allocation during conversion or saving (bsc#1270410).
- CVE-2026-55379: bypass of decompression bomb protection allows excessive memory allocation (bsc#1270411).
- CVE-2026-55380: crafted `.gd` file can trigger excessive C-heap allocation when loaded (bsc#1270412).


Patch instructions:

   To install this openSUSE security update use the suse recommended installation methods
   like YaST online_update or "zypper patch".
   Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-1207=1

Package List:

- openSUSE Leap 16.0:

  python313-Pillow-11.3.0-160000.6.1
  python313-Pillow-tk-11.3.0-160000.6.1

References:

  * https://www.suse.com/security/cve/CVE-2026-42311.html
  * https://www.suse.com/security/cve/CVE-2026-54059.html
  * https://www.suse.com/security/cve/CVE-2026-54060.html
  * https://www.suse.com/security/cve/CVE-2026-55379.html
  * https://www.suse.com/security/cve/CVE-2026-55380.html