Red Hat Product Errata RHSA-2026:66451 - Security Advisory Issued: 2026-09-10 Updated: 2026-09-10 RHSA-2026:66451 - Security Advisory Overview Updated Packages Synopsis Moderate: glib2 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 glib2 is now available for Red Hat Enterprise Linux 8. 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 GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures. Security Fix(es): xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_magic_line() in xdgmimemagic.c (CVE-2026-16118) 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 8 x86_64 Red Hat Enterprise Linux for IBM z Systems 8 s390x Red Hat Enterprise Linux for Power, little endian 8 ppc64le Red Hat Enterprise Linux for ARM 64 8 aarch64 Red Hat CodeReady Linux Builder for x86_64 8 x86_64 Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le Red Hat CodeReady Linux Builder for ARM 64 8 aarch64 Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x Fixes BZ - 2501732 - CVE-2026-16118 xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_magic_line() in xdgmimemagic.c CVEs CVE-2026-16118 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 8 SRPM glib2-2.56.4-178.el8_10.src.rpm SHA-256: c65db6aeab4710bd1f43f3fdafad05188d0d3bbcbcaced740f2d7337229a9339 x86_64 glib2-2.56.4-178.el8_10.i686.rpm SHA-256: f26b66f28ffaf4e1d2f20a9476b326a0b931761bcc8290dd7a53dff205392905 glib2-2.56.4-178.el8_10.x86_64.rpm SHA-256: 2c4a3370b8c444876a230c450830bdb843a160f9ce34993b49a1eb000833bd62 glib2-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: 7afe43a0ce23c89b6d0ae2f62b6372d4e658f5426d445e6eae814d4e3efd6e50 glib2-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: e436280242eae77557aadf2625e4b91cdb04173a251a115c820a0136f6468ecd glib2-debugsource-2.56.4-178.el8_10.i686.rpm SHA-256: 45a9d0470f00fe47a301f1a1e8759ebed303506d5dcb03242ae5a6c99622a3e6 glib2-debugsource-2.56.4-178.el8_10.x86_64.rpm SHA-256: b53e08f6675ec9b3b9938cd0bedef2c017c03ec58c9b8aac98ae2d43d5a57b83 glib2-devel-2.56.4-178.el8_10.i686.rpm SHA-256: 6dd92453e68b80cd49abfc8e7ec7436b4c2424ae7b886e494a4d8666042bc4d6 glib2-devel-2.56.4-178.el8_10.x86_64.rpm SHA-256: ab6e60d9e093878687c8b01a037819d3896b0e470c8ce03786003d6a89637033 glib2-devel-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: 060ee3f254535f970813325f7278f705ab7dcffbb3b05906c0a99efc0e7a7ee3 glib2-devel-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: 6bfe0b78868eb96f9db90f610c58ac60bb0288d58c868179cf5b64113cb24a70 glib2-fam-2.56.4-178.el8_10.x86_64.rpm SHA-256: b8176a1e077cb68af32d27912cb1f9ef471a96b7e0b964684257603623501b2e glib2-fam-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: 221ca6a0ceec92c39055ebbb8df373ee3dc12d568c412c0c69b4fe2ae4271050 glib2-fam-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: a5c6da9dc09864ba5ecadec699689be2bdacc5ec7d3f44c193668bdc2f5fe1b3 glib2-tests-2.56.4-178.el8_10.x86_64.rpm SHA-256: f0665d56ea4ce9eecdadff609676b285d737357896f30dcd8a63113cc9d93121 glib2-tests-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: ddf81833a97324ff850974a34152ffae34532dd74123ce010a65f18375f762e7 glib2-tests-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: 2efe7414df707a74e0b98c566174ccea14de63b3d35cba6271722287174b56ca Red Hat Enterprise Linux for IBM z Systems 8 SRPM glib2-2.56.4-178.el8_10.src.rpm SHA-256: c65db6aeab4710bd1f43f3fdafad05188d0d3bbcbcaced740f2d7337229a9339 s390x glib2-2.56.4-178.el8_10.s390x.rpm SHA-256: 18f5e3946bf137bd8412141c0a136c81aad7242f292c171fce6b69d1b49ac183 glib2-debuginfo-2.56.4-178.el8_10.s390x.rpm SHA-256: 9ba779bf4d97076a8e43b51ec288e0266e773a2c9288333915645a22ea6b9d02 glib2-debugsource-2.56.4-178.el8_10.s390x.rpm SHA-256: 98b871f7660f291df7f4abcf696f7b92b17a105181cb03e9f786cc52aeeae9ba glib2-devel-2.56.4-178.el8_10.s390x.rpm SHA-256: 07e7012274da8324e829d6918fbd9016d658899dcb07f0004142386985afece4 glib2-devel-debuginfo-2.56.4-178.el8_10.s390x.rpm SHA-256: b65f873fd8a6b55459935fa05928bcb55ffcbf4ce2e54eba666b982f7790feed glib2-fam-2.56.4-178.el8_10.s390x.rpm SHA-256: 6067b1ef363b14c5956b4be4ef278849c545ef7853731d3b94313a6ef98e3f87 glib2-fam-debuginfo-2.56.4-178.el8_10.s390x.rpm SHA-256: b3725abfa338fea935894a269979c859b319c9679e7f2ef931d9175e66f19dd8 glib2-tests-2.56.4-178.el8_10.s390x.rpm SHA-256: fd76f9bd523c0bbfe88ba78e9768e599f05a7ee04beca019066feca504127609 glib2-tests-debuginfo-2.56.4-178.el8_10.s390x.rpm SHA-256: 17cd1052dcda0b0ef2e75dc2280b6417332438b1d9cb582ea0e82098ffb01744 Red Hat Enterprise Linux for Power, little endian 8 SRPM glib2-2.56.4-178.el8_10.src.rpm SHA-256: c65db6aeab4710bd1f43f3fdafad05188d0d3bbcbcaced740f2d7337229a9339 ppc64le glib2-2.56.4-178.el8_10.ppc64le.rpm SHA-256: c77174af680accf9911a03ce7283b2bdfcb7e2e6131501c1ef2cb5cfd45d10a1 glib2-debuginfo-2.56.4-178.el8_10.ppc64le.rpm SHA-256: 70d1592129e5debcc032b82ab01407f0e1233ff0433c815ad264ea103ce3c6f6 glib2-debugsource-2.56.4-178.el8_10.ppc64le.rpm SHA-256: 7019ff6b9d453626f7bcd5a724112f842ff55ffc08500e96668651b1f0bc8d71 glib2-devel-2.56.4-178.el8_10.ppc64le.rpm SHA-256: 76ce05cfc75c3d551797a2a36b0621b4ced308a79ec150dad3efbac14eb5ca37 glib2-devel-debuginfo-2.56.4-178.el8_10.ppc64le.rpm SHA-256: be91df32f24c94bf36d0779812f87296aed7879736d14902bb37064ebf64b322 glib2-fam-2.56.4-178.el8_10.ppc64le.rpm SHA-256: 622f539947a6bcd42ff9f3c78a9318946f29e77dc1b2cf572a309105cb902c87 glib2-fam-debuginfo-2.56.4-178.el8_10.ppc64le.rpm SHA-256: 5bbc914e41c7770fef9ffdb15fda05684b23bcfefd20245edbbf7c55a7045e21 glib2-tests-2.56.4-178.el8_10.ppc64le.rpm SHA-256: 4e2d828b2278f21c6082c0d5fadcefb00087a8b2572eade4b83cb4055c26e255 glib2-tests-debuginfo-2.56.4-178.el8_10.ppc64le.rpm SHA-256: ce6dcea4deb80620451801dd265f1956caeff090ee02913ffd8ce78c29678575 Red Hat Enterprise Linux for ARM 64 8 SRPM glib2-2.56.4-178.el8_10.src.rpm SHA-256: c65db6aeab4710bd1f43f3fdafad05188d0d3bbcbcaced740f2d7337229a9339 aarch64 glib2-2.56.4-178.el8_10.aarch64.rpm SHA-256: a20aaf27db0b148e27b75b8ce38f7278779c392bc42959018bdce49a92cce87a glib2-debuginfo-2.56.4-178.el8_10.aarch64.rpm SHA-256: 4fd7b698044fd136a2484c03b029348d044410c134be3ac1f40714508acdc804 glib2-debugsource-2.56.4-178.el8_10.aarch64.rpm SHA-256: 3a2d74ac0bf35a33111a527140589ec2c216c4408c75e202365109f70b837600 glib2-devel-2.56.4-178.el8_10.aarch64.rpm SHA-256: 31aa24774eea1c1025906b4696796a66e589ca999217ca5f41279bb1ff7a1538 glib2-devel-debuginfo-2.56.4-178.el8_10.aarch64.rpm SHA-256: 4b9b9a3755caca7c011b2dc3a8f5f83d7aa699efc57dd3645482c78d5ccda745 glib2-fam-2.56.4-178.el8_10.aarch64.rpm SHA-256: f610cf99dacefa787bb84c0b60a9f346dcc6276015c08978a06204dae8635b57 glib2-fam-debuginfo-2.56.4-178.el8_10.aarch64.rpm SHA-256: feba157ad4c0ab9cee456e5ffcc1884c87c3b94fc5939ea74cf593f17ee8c8b6 glib2-tests-2.56.4-178.el8_10.aarch64.rpm SHA-256: f24c38ec7dc7b329fed261858904adfe76d367dbcd7ac03e9ed1ba227afc3ea9 glib2-tests-debuginfo-2.56.4-178.el8_10.aarch64.rpm SHA-256: 9723db0d6c62d545d5019db255e48ceede01714cb39ce069ae8763b97c224be7 Red Hat CodeReady Linux Builder for x86_64 8 SRPM x86_64 glib2-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: 7afe43a0ce23c89b6d0ae2f62b6372d4e658f5426d445e6eae814d4e3efd6e50 glib2-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: e436280242eae77557aadf2625e4b91cdb04173a251a115c820a0136f6468ecd glib2-debugsource-2.56.4-178.el8_10.i686.rpm SHA-256: 45a9d0470f00fe47a301f1a1e8759ebed303506d5dcb03242ae5a6c99622a3e6 glib2-debugsource-2.56.4-178.el8_10.x86_64.rpm SHA-256: b53e08f6675ec9b3b9938cd0bedef2c017c03ec58c9b8aac98ae2d43d5a57b83 glib2-devel-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: 060ee3f254535f970813325f7278f705ab7dcffbb3b05906c0a99efc0e7a7ee3 glib2-devel-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: 6bfe0b78868eb96f9db90f610c58ac60bb0288d58c868179cf5b64113cb24a70 glib2-doc-2.56.4-178.el8_10.noarch.rpm SHA-256: ad8106063f650e97f95060ff60f4f126bfc867cf07d387e4984be02be5a4b807 glib2-fam-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: 221ca6a0ceec92c39055ebbb8df373ee3dc12d568c412c0c69b4fe2ae4271050 glib2-fam-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: a5c6da9dc09864ba5ecadec699689be2bdacc5ec7d3f44c193668bdc2f5fe1b3 glib2-static-2.56.4-178.el8_10.i686.rpm SHA-256: 47d8c06cd2e37abf3aa02cf9a24d2f16820a3a3a62542d518acc2d87c7f3f97f glib2-static-2.56.4-178.el8_10.x86_64.rpm SHA-256: 0c629a2af129adef1e1e2288b9b5c1aab161ce400c2e531466eeef3151449223 glib2-tests-debuginfo-2.56.4-178.el8_10.i686.rpm SHA-256: ddf81833a97324ff850974a34152ffae34532dd74123ce010a65f18375f762e7 glib2-tests-debuginfo-2.56.4-178.el8_10.x86_64.rpm SHA-256: 2efe7414df707a74e0b98c566174ccea14de63b3d35cba6271722287174b56ca Red Hat CodeReady Linux Builder for Power, little endian 8 SRPM ppc64le glib2-debuginfo-2.56.4-178.el8_10.ppc64le.rpm SHA-256: