SUSE alert SUSE-SU-2026:20523-1 (libpng16)

From:
             
 
SLE-SECURITY-UPDATES <null@suse.de>
To:
             
 
sle-security-updates@lists.suse.com
Subject:
             
 
SUSE-SU-2026:20523-1: important: Security update for libpng16
Date:
             
 
Fri, 27 Feb 2026 20:31:49 -0000
Message-ID:
             
 
<177222430946.22.14731372460269914698@b3aed82db3f4>


# Security update for libpng16

Announcement ID: SUSE-SU-2026:20523-1  
Release Date: 2026-02-26T10:50:58Z  
Rating: important  
References:

  * bsc#1256525
  * bsc#1256526
  * bsc#1257364
  * bsc#1257365
  * bsc#1258020

  
Cross-References:

  * CVE-2025-28162
  * CVE-2025-28164
  * CVE-2026-22695
  * CVE-2026-22801
  * CVE-2026-25646

  
CVSS scores:

  * CVE-2025-28162 ( SUSE ):  4.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-28162 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2025-28162 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-28164 ( SUSE ):  4.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-28164 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2025-28164 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-22695 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-22695 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
  * CVE-2026-22695 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
  * CVE-2026-22695 ( NVD ):  6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
  * CVE-2026-22801 ( SUSE ):  7.0
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-22801 ( SUSE ):  6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-22801 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-22801 ( NVD ):  6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-25646 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-25646 ( SUSE ):  7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-25646 ( NVD ):  8.3

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/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-2026-25646 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves five vulnerabilities can now be installed.

## Description:

This update for libpng16 fixes the following issues:

  * CVE-2025-28162: memory leaks when running `pngimage` (bsc#1257364).
  * CVE-2025-28164: memory leaks when running `pngimage` (bsc#1257365).
  * CVE-2026-22695: heap buffer over-read in png_image_finish_read
    (bsc#1256525).
  * CVE-2026-22801: integer truncation causing heap buffer over-read in
    png_image_write_* (bsc#1256526).
  * CVE-2026-25646: heap buffer overflow vulnerability in
    png_set_dither/png_set_quantize (bsc#1258020).

## Patch Instructions:

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

  * SUSE Linux Micro 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-593=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * libpng16-16-1.6.43-3.1
    * libpng16-debugsource-1.6.43-3.1
    * libpng16-16-debuginfo-1.6.43-3.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-28162.html
  * https://www.suse.com/security/cve/CVE-2025-28164.html
  * https://www.suse.com/security/cve/CVE-2026-22695.html
  * https://www.suse.com/security/cve/CVE-2026-22801.html
  * https://www.suse.com/security/cve/CVE-2026-25646.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1256525
  * https://bugzilla.suse.com/show_bug.cgi?id=1256526
  * https://bugzilla.suse.com/show_bug.cgi?id=1257364
  * https://bugzilla.suse.com/show_bug.cgi?id=1257365
  * https://bugzilla.suse.com/show_bug.cgi?id=1258020



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