RHSA-2026:0321 - Security Advisory

Topic

An update for libpng is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics (PNG) image format files.

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64

Fixes

• BZ - 2416904 - CVE-2025-64720 libpng: LIBPNG buffer overflow
• BZ - 2416907 - CVE-2025-65018 libpng: LIBPNG heap buffer overflow
• BZ - 2418711 - CVE-2025-66293 libpng: LIBPNG out-of-bounds read in png_image_read_composite

CVEs

• CVE-2025-64720
• CVE-2025-65018
• CVE-2025-66293

References

• https://access.redhat.com/security/updates/classification/#important