Out-of-bounds Read Affecting libpng16-16 package, versions <1.6.34-150000.3.12.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Social Trends
EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-SLES154-LIBPNG1616-14465229
  • published18 Dec 2025
  • disclosed17 Dec 2025

Introduced: 17 Dec 2025

CVE-2025-64720  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 libpng16-16 to version 1.6.34-150000.3.12.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng16-16 package and not the libpng16-16 package as distributed by SLES. See How to fix? for SLES:15.4 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, 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.

CVSS Base Scores

version 3.1