Out-of-bounds Read Affecting libpng package, versions <0:1.6.56-1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-RHEL10-LIBPNG-16065301
  • published19 Apr 2026
  • disclosed24 Nov 2025

Introduced: 24 Nov 2025

CVE-2025-64505  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:10 libpng to version 0:1.6.56-1.hum1 or higher.
This issue was patched in RHSA-2026:6732.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng package and not the libpng package as distributed by RHEL. See How to fix? for RHEL:10 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. 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.

CVSS Base Scores

version 3.1