RHSA-2026:29022 — Security Advisory

An update for libpng12 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 Moderate. 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.

The libpng12 package provides libpng 1.2, which is the previous version of the libpng library for manipulating PNG (Portable Network Graphics) image format files. This version should be used in case that it is not possible to use the current version of libpng.

Security Fix(es):

• libpng: libpng: Arbitrary code execution due to use-after-free vulnerability (CVE-2026-33416)

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.