RHSA-2026:54638: Important: compat-libtiff3 security update

Published Aug 13, 2026
·
Updated

The libtiff3 package provides libtiff 3, an older version of libtiff library for manipulating TIFF (Tagged Image File Format) image format files. This version should be used only if you are unable to use the current version of libtiff.Security Fix(es): libtiff: libtiff: Heap-based buffer overflow via crafted PixarLog-compressed TIFF image (CVE-2026-12912) 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

9 affected componentsFixes available
redhat/compat-libtiff3<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3-debuginfo<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3-debuginfo<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3-debugsource<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3-debugsource<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3-debuginfo<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3
redhat/compat-libtiff3-debugsource<3.9.4-13.el8_8.3
3.9.4-13.el8_8.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/compat-libtiff3 to a version that resolves this vulnerability.

    Fixed in 3.9.4-13.el8_8.3
  2. Upgrade

    Upgrade redhat/compat-libtiff3-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.9.4-13.el8_8.3
  3. Upgrade

    Upgrade redhat/compat-libtiff3-debugsource to a version that resolves this vulnerability.

    Fixed in 3.9.4-13.el8_8.3

Event History

Aug 13, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of RHSA-2026:54638?

The severity of RHSA-2026:54638 is classified as important.

2

How do I fix RHSA-2026:54638?

To fix RHSA-2026:54638, you should update the compat-libtiff3 package to the latest version provided by Red Hat.

3

What type of vulnerability is addressed in RHSA-2026:54638?

RHSA-2026:54638 addresses a heap-based buffer overflow vulnerability found in the libtiff library.

4

What software components are affected by RHSA-2026:54638?

The affected software components include redhat/compat-libtiff3, redhat/compat-libtiff3-debuginfo, and redhat/compat-libtiff3-debugsource.

5

When was RHSA-2026:54638 published?

RHSA-2026:54638 was published on August 13, 2026.

Company

Resources

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RHSA-2026:54638 - Important: compat-libtiff3 security update - SecAlerts