RHSA-2026:28233MediumCVSS 7.6

Red Hat Security Advisory: libpng security update

Published
June 23, 2026
Last Modified
October 2, 2026

🔗 CVE IDs covered (2)

CVE-2026-33416 →CVE-2026-33636 →

📋 Description

CVE-2026-33416 — libpng: libpng: Arbitrary code execution due to use-after-free vulnerability CVE-2026-33636 — libpng: libpng: Information disclosure and denial of service via out-of-bounds read/write in Neon palette expansion

🎯 Affected products39

  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-2:1.6.40-11.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-2:1.6.40-11.el10_2.1.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-2:1.6.40-11.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debuginfo-2:1.6.40-11.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-debugsource-2:1.6.40-11.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-devel-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-devel-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-devel-2:1.6.40-11.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-devel-2:1.6.40-11.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-devel-debuginfo-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-devel-debuginfo-2:1.6.40-11.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-devel-debuginfo-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • libpng-devel-debuginfo-2:1.6.40-11.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • libpng-devel-debuginfo-2:1.6.40-11.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • +9 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To reduce exposure, avoid processing untrusted PNG image files with applications that utilize libpng. Restricting the source of PNG images to trusted origins can limit the attack surface. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (5)