Security update for libpng16 SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2026:20530-1 Final 1 1 2026-02-26T11:26:10Z current 2026-02-26T11:26:10Z 2026-02-26T11:26:10Z 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: Fixed a heap buffer overflow vulnerability in png_set_dither/png_set_quantize (bsc#1258020). - CVE-2025-28162: memory leaks when running `pngimage` (bsc#1257364). - CVE-2025-28164: memory leaks when running `pngimage` (bsc#1257365). - CVE-2026-22695: Fixed heap buffer over-read in png_image_finish_read (bsc#1256525). - CVE-2026-22801: Fixed integer truncation causing heap buffer over-read in png_image_write_* (bsc#1256526). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-SLE-Micro-6.1-411 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-202620530-1/ Link for SUSE-SU-2026:20530-1 https://lists.suse.com/pipermail/sle-security-updates/2026-March/024563.html E-Mail link for SUSE-SU-2026:20530-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1256525 SUSE Bug 1256525 https://bugzilla.suse.com/1256526 SUSE Bug 1256526 https://bugzilla.suse.com/1257364 SUSE Bug 1257364 https://bugzilla.suse.com/1257365 SUSE Bug 1257365 https://bugzilla.suse.com/1258020 SUSE Bug 1258020 https://www.suse.com/security/cve/CVE-2025-28162/ SUSE CVE CVE-2025-28162 page https://www.suse.com/security/cve/CVE-2025-28164/ SUSE CVE CVE-2025-28164 page https://www.suse.com/security/cve/CVE-2026-22695/ SUSE CVE CVE-2026-22695 page https://www.suse.com/security/cve/CVE-2026-22801/ SUSE CVE CVE-2026-22801 page https://www.suse.com/security/cve/CVE-2026-25646/ SUSE CVE CVE-2026-25646 page SUSE Linux Micro 6.1 libpng16-16-1.6.43-slfo.1.1_3.1 libpng16-16-1.6.43-slfo.1.1_3.1 as a component of SUSE Linux Micro 6.1 Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via the pngimage with AddressSanitizer (ASan), the program leaks memory in various locations, eventually leading to high memory usage and causing the program to become unresponsive CVE-2025-28162 SUSE Linux Micro 6.1:libpng16-16-1.6.43-slfo.1.1_3.1 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-202620530-1/ https://www.suse.com/security/cve/CVE-2025-28162.html CVE-2025-28162 https://bugzilla.suse.com/1257364 SUSE Bug 1257364 Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via png_create_read_struct() function. CVE-2025-28164 SUSE Linux Micro 6.1:libpng16-16-1.6.43-slfo.1.1_3.1 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-202620530-1/ https://www.suse.com/security/cve/CVE-2025-28164.html CVE-2025-28164 https://bugzilla.suse.com/1257365 SUSE Bug 1257365 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.51 to 1.6.53, there is a heap buffer over-read in the libpng simplified API function png_image_finish_read when processing interlaced 16-bit PNGs with 8-bit output format and non-minimal row stride. This is a regression introduced by the fix for CVE-2025-65018. This vulnerability is fixed in 1.6.54. CVE-2026-22695 SUSE Linux Micro 6.1:libpng16-16-1.6.43-slfo.1.1_3.1 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-202620530-1/ https://www.suse.com/security/cve/CVE-2026-22695.html CVE-2026-22695 https://bugzilla.suse.com/1256525 SUSE Bug 1256525 LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54. CVE-2026-22801 SUSE Linux Micro 6.1:libpng16-16-1.6.43-slfo.1.1_3.1 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-202620530-1/ https://www.suse.com/security/cve/CVE-2026-22801.html CVE-2026-22801 https://bugzilla.suse.com/1256526 SUSE Bug 1256526 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 Micro 6.1:libpng16-16-1.6.43-slfo.1.1_3.1 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-202620530-1/ https://www.suse.com/security/cve/CVE-2026-25646.html CVE-2026-25646 https://bugzilla.suse.com/1258020 SUSE Bug 1258020