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High ALSA-2026:6439 1 CVE

Important: libpng15 security update

Published Apr 2, 2026 · Updated Oct 29, 2026

Summary

The libpng15 package provides libpng 1.5, an older version of the libpng. library for manipulating PNG (Portable Network Graphics) image format files. This version should be used only if you are unable to use the current version of libpng.

Security Fix(es):

* libpng: LIBPNG has a heap buffer overflow in png_set_quantize (CVE-2026-25646)

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.

Fixed packages 1

ReleasePackageFixed in
AlmaLinux · 8 libpng15 1.5.30-8.el8_10

Vulnerabilities 1

  • High 8.3

    LIBPNG has a heap buffer overflow in png_set_quantize

    LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function i…

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-25646
  • report
    https://bugzilla.redhat.com/2438542
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-6439.html