Security update for libpng16 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2026:0583-1 Final 1 1 2026-02-20T10:02:34Z current 2026-02-20T10:02:34Z 2026-02-20T10:02:34Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for libpng16 This update for libpng16 fixes the following issues: - CVE-2026-25646: heap buffer overflow vulnerability in png_set_dither/png_set_quantize (bsc#1258020). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2026-583,SUSE-SLE-SERVER-12-SP5-LTSS-2026-583,SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-583 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2026/suse-su-20260583-1/ Link for SUSE-SU-2026:0583-1 https://lists.suse.com/pipermail/sle-security-updates/2026-February/024363.html E-Mail link for SUSE-SU-2026:0583-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1258020 SUSE Bug 1258020 https://www.suse.com/security/cve/CVE-2026-25646/ SUSE CVE CVE-2026-25646 page SUSE Linux Enterprise Server 12 SP5-LTSS SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libpng16-16-1.6.8-15.18.1 libpng16-16-32bit-1.6.8-15.18.1 libpng16-16-64bit-1.6.8-15.18.1 libpng16-compat-devel-1.6.8-15.18.1 libpng16-compat-devel-32bit-1.6.8-15.18.1 libpng16-compat-devel-64bit-1.6.8-15.18.1 libpng16-devel-1.6.8-15.18.1 libpng16-devel-32bit-1.6.8-15.18.1 libpng16-devel-64bit-1.6.8-15.18.1 libpng16-tools-1.6.8-15.18.1 libpng16-16-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libpng16-16-32bit-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libpng16-compat-devel-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libpng16-devel-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server 12 SP5-LTSS libpng16-16-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libpng16-16-32bit-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libpng16-compat-devel-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 libpng16-devel-1.6.8-15.18.1 as a component of SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is fixed in 1.6.55. CVE-2026-25646 SUSE Linux Enterprise Server 12 SP5-LTSS:libpng16-16-1.6.8-15.18.1 SUSE Linux Enterprise Server 12 SP5-LTSS:libpng16-16-32bit-1.6.8-15.18.1 SUSE Linux Enterprise Server 12 SP5-LTSS:libpng16-compat-devel-1.6.8-15.18.1 SUSE Linux Enterprise Server 12 SP5-LTSS:libpng16-devel-1.6.8-15.18.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libpng16-16-1.6.8-15.18.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libpng16-16-32bit-1.6.8-15.18.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libpng16-compat-devel-1.6.8-15.18.1 SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:libpng16-devel-1.6.8-15.18.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2026/suse-su-20260583-1/ https://www.suse.com/security/cve/CVE-2026-25646.html CVE-2026-25646 https://bugzilla.suse.com/1258020 SUSE Bug 1258020