RHSA-2026:52951: Moderate: libgcrypt security update

Published Aug 10, 2026
·
Updated

Moderate: libgcrypt security update

Other sources

The libgcrypt library provides general-purpose implementations of various cryptographic algorithms.Security Fix(es): Libgcrypt: Libgcrypt: Denial of Service and buffer overflow via crafted ECDH ciphertext (CVE-2026-41989) 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

28 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
redhat/libgcrypt<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-debuginfo<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-debugsource<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-devel<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-devel-debuginfo<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-debuginfo<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-debugsource<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-devel<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-devel-debuginfo<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-debuginfo<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-debugsource<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-devel<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt-devel-debuginfo<1.11.0-5.el10_0.1
1.11.0-5.el10_0.1
redhat/libgcrypt<1.11.0-5.el10_0.1.aa
1.11.0-5.el10_0.1.aa
redhat/libgcrypt-debuginfo<1.11.0-5.el10_0.1.aa
1.11.0-5.el10_0.1.aa
redhat/libgcrypt-debugsource<1.11.0-5.el10_0.1.aa
1.11.0-5.el10_0.1.aa
redhat/libgcrypt-devel<1.11.0-5.el10_0.1.aa
1.11.0-5.el10_0.1.aa
redhat/libgcrypt-devel-debuginfo<1.11.0-5.el10_0.1.aa
1.11.0-5.el10_0.1.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1
  2. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1
  3. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1
  4. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1
  5. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1
  6. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1.aa
  7. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1.aa
  8. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1.aa
  9. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1.aa
  10. Upgrade

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

    Fixed in 1.11.0-5.el10_0.1.aa
  11. Compensating control

    Apply Red Hat’s described mitigation/update for the libgcrypt security issue (Denial of Service and buffer overflow via crafted ECDH ciphertext) referenced by CVE-2026-41989, using the update application details in the linked advisory article (access.redhat.com/articles/11258).

Event History

Aug 10, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·05:03 PM
Data Sourced
via Red Hat·05:03 PM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:52951?

The severity of RHSA-2026:52951 is medium, rated at 4.

2

How do I fix RHSA-2026:52951?

To fix RHSA-2026:52951, update the libgcrypt package to the latest version provided by Red Hat.

3

What systems are affected by RHSA-2026:52951?

RHSA-2026:52951 affects Red Hat Enterprise Linux for ARM 64, x86_64, Power, and IBM z Systems.

4

What is the description of RHSA-2026:52951?

RHSA-2026:52951 is a security update for the libgcrypt library.

5

When was RHSA-2026:52951 published?

RHSA-2026:52951 was published on August 10, 2026.

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