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High RHSA-2026:65477 1 CVE

Red Hat Security Advisory: libyang security, bug fix, and enhancement update

Published Sep 9, 2026 · Updated Sep 9, 2026

Ecosystem: Red Hat

Fixed packages 1

ReleasePackageFixed in
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::appstream libyang 0:2.1.148-1.el9_2.1

Vulnerabilities 1

  • High 7.5
    CVE-2026-44673

    libyang: lyb_read_string() integer overflow → heap buffer overflow

    libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB …

    CESNET libyang libyang libyang2 Debian Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2477617
  • article
    https://issues.redhat.com/browse/RHEL-224590
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_65477.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-44673
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-44673
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-44673
  • article
    https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh