RHSA-2026:42668: Important: libtiff security update

Published Jul 21, 2026
·
Updated

Important: libtiff security update

Other sources

The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.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.

— Red Hat

Affected Software

48 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Red Hat CodeReady Linux Builder for ARM 64
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for x86_64
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
redhat/libtiff<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-debuginfo<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-debuginfo<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-debugsource<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-debugsource<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-devel<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-devel<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-tools-debuginfo<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-tools-debuginfo<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-debuginfo<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-debugsource<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-devel<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-tools-debuginfo<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff<4.4.0-18.el9_8.1.aa
4.4.0-18.el9_8.1.aa
redhat/libtiff-debuginfo<4.4.0-18.el9_8.1.aa
4.4.0-18.el9_8.1.aa
redhat/libtiff-debugsource<4.4.0-18.el9_8.1.aa
4.4.0-18.el9_8.1.aa
redhat/libtiff-devel<4.4.0-18.el9_8.1.aa
4.4.0-18.el9_8.1.aa
redhat/libtiff-tools-debuginfo<4.4.0-18.el9_8.1.aa
4.4.0-18.el9_8.1.aa
redhat/libtiff-tools<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-tools<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1
redhat/libtiff-tools<4.4.0-18.el9_8.1.aa
4.4.0-18.el9_8.1.aa
redhat/libtiff-tools<4.4.0-18.el9_8.1
4.4.0-18.el9_8.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1
  2. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1
  3. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1
  4. Upgrade

    Upgrade redhat/libtiff-devel to a version that resolves this vulnerability.

    Fixed in 4.4.0-18.el9_8.1
  5. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1
  6. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1.aa
  7. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1.aa
  8. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1.aa
  9. Upgrade

    Upgrade redhat/libtiff-devel to a version that resolves this vulnerability.

    Fixed in 4.4.0-18.el9_8.1.aa
  10. Upgrade

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

    Fixed in 4.4.0-18.el9_8.1.aa
  11. Upgrade

    Upgrade redhat/libtiff-tools to a version that resolves this vulnerability.

    Fixed in 4.4.0-18.el9_8.1
  12. Upgrade

    Upgrade redhat/libtiff-tools to a version that resolves this vulnerability.

    Fixed in 4.4.0-18.el9_8.1.aa

Event History

Jul 21, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·10:05 AM
Data Sourced
via Red Hat·10:05 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:42668?

The severity of RHSA-2026:42668 is classified as high, with a score of 7.

2

How do I fix RHSA-2026:42668?

To fix RHSA-2026:42668, update the libtiff packages to the latest version provided by Red Hat.

3

What vulnerability does RHSA-2026:42668 address?

RHSA-2026:42668 addresses a heap-based buffer overflow vulnerability in the libtiff library, specifically via crafted PixarLog-compressed TIFF images.

4

What systems are affected by RHSA-2026:42668?

RHSA-2026:42668 affects Red Hat Enterprise Linux for x86_64 and its associated libtiff packages.

5

Is there a known exploit for RHSA-2026:42668?

Yes, the buffer overflow vulnerability in RHSA-2026:42668 can be exploited through specially crafted TIFF images.

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