RHSA-2026:33455HighCVSS 7.5

Red Hat Security Advisory: giflib security update

Published
June 30, 2026
Last Modified
October 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-26740 →

📋 Description

CVE-2026-26740 — giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension

🎯 Affected products20

  • Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-0:5.1.4-3.el8_6.2.src as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-0:5.1.4-3.el8_6.2.src as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-debuginfo-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-debuginfo-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-debuginfo-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-debuginfo-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-debugsource-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-debugsource-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-debugsource-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-debugsource-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-utils-debuginfo-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-utils-debuginfo-0:5.1.4-3.el8_6.2.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • giflib-utils-debuginfo-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • giflib-utils-debuginfo-0:5.1.4-3.el8_6.2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)

✅ 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: 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 (4)