RHSA-2026:33455: Important: giflib security update

Published Jun 30, 2026
·
Updated

giflib is a library for reading and writing gif images.Security Fix(es): giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension (CVE-2026-26740) 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.

Affected Software

10 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension
Red Hat Red Hat Enterprise Linux Server - AUS
redhat/giflib<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib-debuginfo<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib-debuginfo<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib-debugsource<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib-debugsource<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib-utils-debuginfo<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2
redhat/giflib-utils-debuginfo<5.1.4-3.el8_6.2
5.1.4-3.el8_6.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/giflib to a version that resolves this vulnerability.

    Fixed in 5.1.4-3.el8_6.2
  2. Upgrade

    Upgrade redhat/giflib-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.4-3.el8_6.2
  3. Upgrade

    Upgrade redhat/giflib-debugsource to a version that resolves this vulnerability.

    Fixed in 5.1.4-3.el8_6.2
  4. Upgrade

    Upgrade redhat/giflib-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.4-3.el8_6.2

Event History

Jun 30, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·09:39 AM
Data Sourced
via Red Hat·09:39 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:33455?

The severity of RHSA-2026:33455 is marked as high, with a score of 7.

2

What does RHSA-2026:33455 address?

RHSA-2026:33455 addresses security vulnerabilities in giflib that could potentially lead to exploitation.

3

How do I fix RHSA-2026:33455?

To fix RHSA-2026:33455, you should update the giflib package to the latest patched version available in your repository.

4

Which systems are affected by RHSA-2026:33455?

RHSA-2026:33455 affects Red Hat Enterprise Linux for x86_64 and Extended Update Support Extension.

5

When was RHSA-2026:33455 published?

RHSA-2026:33455 was published on June 30, 2026.

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