Affected: AlmaLinux:8: mingw32-libpng, AlmaLinux:8: mingw32-libpng-static, AlmaLinux:8: mingw64-libpng, AlmaLinux:8: mingw64-libpng-static

MinGW Windows Libpng library.

Security Fix(es):

* libpng: LIBPNG buffer overflow (CVE-2025-64720) * libpng: LIBPNG heap buffer overflow (CVE-2025-65018) * libpng: LIBPNG out-of-bounds read in png_image_read_composite (CVE-2025-66293)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected: Alpaquita:23: libpng, Alpaquita:25: libpng, Alpaquita:stream: libpng, BellSoft Hardened Containers:23: libpng, BellSoft Hardened Containers:25: libpng, BellSoft Hardened Containers:stream: libpng

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

Affected: openEuler:24.03-LTS-SP1: libpng, openEuler:24.03-LTS-SP2: libpng, openEuler:20.03-LTS-SP4: libpng, openEuler:22.03-LTS-SP3: libpng, openEuler:22.03-LTS-SP4: libpng, openEuler:24.03-LTS: libpng

The libpng package contains libraries used by other programs for reading and writing PNG format files. The PNG format was designed as a replacement for GIF and, to a lesser extent, TIFF, with many improvements and extensions and lack of patent problems. Security Fix(es):

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.(CVE-2025-64505)

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This i…

libpng16-16-1.6.51-1.1 on GA media

libpng: LIBPNG buffer overflow libpng: LIBPNG heap buffer overflow libpng: LIBPNG out-of-bounds read in png_image_read_composite

Security update for libpng16

Affected: Ubuntu:Pro:16.04:LTS: libpng1.6, Ubuntu:Pro:18.04:LTS: libpng1.6, Ubuntu:Pro:20.04:LTS: libpng1.6, Ubuntu:22.04:LTS: libpng1.6, Ubuntu:24.04:LTS: libpng1.6, Ubuntu:25.10: libpng1.6

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in libpng ausnutzen, um einen Denial of Service Angriff durchzuführen und Code auszuführen.