Out-of-bounds Read Affecting libpng-tools-debuginfo package, versions <2:1.6.37-10.amzn2023.0.7


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-AMZN2023-LIBPNGTOOLSDEBUGINFO-14432072
  • published17 Dec 2025
  • disclosed25 Nov 2025

Introduced: 25 Nov 2025

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

How to fix?

Upgrade Amazon-Linux:2023 libpng-tools-debuginfo to version 2:1.6.37-10.amzn2023.0.7 or higher.
This issue was patched in ALAS2023-2025-1306.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng-tools-debuginfo package and not the libpng-tools-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 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