Red Hat Product Errata RHSA-2026:33230 - Security Advisory Issued: 2026-06-29 Updated: 2026-06-29 RHSA-2026:33230 - Security Advisory Overview Updated Packages Synopsis Moderate: glibc security update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for glibc is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix(es): glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width (CVE-2026-5450) 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64 Red Hat Enterprise Linux Server - AUS 9.6 x86_64 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.6 s390x Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.6 ppc64le Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.6 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.6 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64 Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.6 x86_64 Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.6 ppc64le Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.6 s390x Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.6 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.6 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.6 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.6 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.6 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.6 s390x Fixes BZ - 2459853 - CVE-2026-5450 glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width CVEs CVE-2026-5450 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 SRPM glibc-2.34-168.el9_6.25.src.rpm SHA-256: d3bdee5bae0baf77c9be8dcfb0c561e149776926b177dea96aae651e6e57a711 x86_64 glibc-2.34-168.el9_6.25.i686.rpm SHA-256: d5d9e4e2cd62fe8ee1607061e593a30de7390e1d2c306370142ab8e59b2d92e7 glibc-2.34-168.el9_6.25.x86_64.rpm SHA-256: 7292c5065c4fc64e1c2a21ca8f79ce236b538d2a6aaa65b4d732eb3a338062d1 glibc-all-langpacks-2.34-168.el9_6.25.x86_64.rpm SHA-256: 1d39ed55cdc532efab035743f5b6b77559fabbd792082e180504e4d68b728f15 glibc-benchtests-debuginfo-2.34-168.el9_6.25.i686.rpm SHA-256: 7852279de38812ec3666c998edb8709dcd9754d43caf65de181c8950048da973 glibc-benchtests-debuginfo-2.34-168.el9_6.25.i686.rpm SHA-256: 7852279de38812ec3666c998edb8709dcd9754d43caf65de181c8950048da973 glibc-benchtests-debuginfo-2.34-168.el9_6.25.x86_64.rpm SHA-256: 35c0795d6eeb53a08716d85256c1dbd236628a333c1ac2dcc99296a6c8c164f2 glibc-benchtests-debuginfo-2.34-168.el9_6.25.x86_64.rpm SHA-256: 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