RHSA-2026:49666: Important: libyang security update

Published Aug 3, 2026
·
Updated

Important: libyang security update

Other sources

Libyang is YANG data modeling language parser and toolkit written (and providing API) in C.Security Fix(es): libyang: libyang: Denial of Service or arbitrary code execution via maliciously crafted LYB binary blob (CVE-2026-44673) 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

24 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
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
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
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
redhat/libyang<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-debuginfo<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-debugsource<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-tools-debuginfo<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-debuginfo<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-debugsource<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-tools-debuginfo<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-debuginfo<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-debugsource<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang-tools-debuginfo<2.1.148-2.el10_0.1
2.1.148-2.el10_0.1
redhat/libyang<2.1.148-2.el10_0.1.aa
2.1.148-2.el10_0.1.aa
redhat/libyang-debuginfo<2.1.148-2.el10_0.1.aa
2.1.148-2.el10_0.1.aa
redhat/libyang-debugsource<2.1.148-2.el10_0.1.aa
2.1.148-2.el10_0.1.aa
redhat/libyang-tools-debuginfo<2.1.148-2.el10_0.1.aa
2.1.148-2.el10_0.1.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1
  2. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1
  3. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1
  4. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1
  5. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1.aa
  6. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1.aa
  7. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1.aa
  8. Upgrade

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

    Fixed in 2.1.148-2.el10_0.1.aa

Event History

Aug 3, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·11:43 AM
Data Sourced
via Red Hat·11:43 AM
Severity
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