Out-of-bounds Read Affecting libpng16-tools package, versions <1.6.44-160000.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-SLES1600-LIBPNG16TOOLS-15014032
  • published17 Jan 2026
  • disclosed12 Jan 2026

Introduced: 12 Jan 2026

CVE-2025-64506  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libpng16-tools to version 1.6.44-160000.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng16-tools package and not the libpng16-tools package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

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 issue has been patched in version 1.6.51.

CVSS Base Scores

version 3.1