Red Hat Product Errata RHSA-2026:29981 - Security Advisory Issued: 2026-06-25 Updated: 2026-06-25 RHSA-2026:29981 - Security Advisory Overview Updated Packages Synopsis Moderate: golang security, bug fix, and enhancement 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 golang is now available for Red Hat Enterprise Linux 9. 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 golang packages provide the Go programming language compiler. Security Fix(es): net/textproto: golang: Golang net/textproto: Misleading error messages via input injection (CVE-2026-42507) Bug Fix(es) and Enhancement(s): Update Go to version 1.26.4+1 [rhel-9.8.z] (JIRA:RHEL-183350) 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 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2484205 - CVE-2026-42507 net/textproto: golang: Golang net/textproto: Misleading error messages via input injection RHEL-183350 - Update Go to version 1.26.4+1 [rhel-9.8.z] CVEs CVE-2026-42507 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 9 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 x86_64 go-toolset-1.26.4-1.el9_8.x86_64.rpm SHA-256: 1b0067c3c44adff3fb81aa7ba2c33fb0d1f8718f77b453c266afa457de0af87f golang-1.26.4-1.el9_8.x86_64.rpm SHA-256: 2f053d4f51c871560545998c26bee357a6e4d116266113393d866eebd9b9d672 golang-bin-1.26.4-1.el9_8.x86_64.rpm SHA-256: 4022456084691f3e2f4398a9ade2b6e12bd6886d0e0bfd9bed578268f0481aad golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedafeb golang-race-1.26.4-1.el9_8.x86_64.rpm SHA-256: 5703a4aa2319b48115296256a2f4f69027e5796edc59571bdc48a5017a58f2f5 golang-src-1.26.4-1.el9_8.noarch.rpm SHA-256: 879164e562d5f1921e4da96cc92d37ac776e0d1192ebd5832b9d5d180edc34d6 golang-tests-1.26.4-1.el9_8.noarch.rpm SHA-256: f41f4bc66f6b9f876c96ae36a9b7c6c98b9e2f0d36b189a2718cf9a787bea1be Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 x86_64 go-toolset-1.26.4-1.el9_8.x86_64.rpm SHA-256: 1b0067c3c44adff3fb81aa7ba2c33fb0d1f8718f77b453c266afa457de0af87f golang-1.26.4-1.el9_8.x86_64.rpm SHA-256: 2f053d4f51c871560545998c26bee357a6e4d116266113393d866eebd9b9d672 golang-bin-1.26.4-1.el9_8.x86_64.rpm SHA-256: 4022456084691f3e2f4398a9ade2b6e12bd6886d0e0bfd9bed578268f0481aad golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedafeb golang-race-1.26.4-1.el9_8.x86_64.rpm SHA-256: 5703a4aa2319b48115296256a2f4f69027e5796edc59571bdc48a5017a58f2f5 golang-src-1.26.4-1.el9_8.noarch.rpm SHA-256: 879164e562d5f1921e4da96cc92d37ac776e0d1192ebd5832b9d5d180edc34d6 golang-tests-1.26.4-1.el9_8.noarch.rpm SHA-256: f41f4bc66f6b9f876c96ae36a9b7c6c98b9e2f0d36b189a2718cf9a787bea1be Red Hat Enterprise Linux for IBM z Systems 9 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 s390x go-toolset-1.26.4-1.el9_8.s390x.rpm SHA-256: 70785c28d58890ab177b7654834c9175564e13d2d2c6467c97ce7f8c2a046cf3 golang-1.26.4-1.el9_8.s390x.rpm SHA-256: ab88d3273c82dda761a1ece90ceed7a92dd5fafbcef9cc71150153bf62b7aea6 golang-bin-1.26.4-1.el9_8.s390x.rpm SHA-256: 73fea3c3e7a96951df6f519994a501256bac2b656744f354de44c82865235097 golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedafeb golang-race-1.26.4-1.el9_8.s390x.rpm SHA-256: 737d400020660d42ba8bab6b893261534a84a05b0c7ac78677dc0ebd59813d7b golang-src-1.26.4-1.el9_8.noarch.rpm SHA-256: 879164e562d5f1921e4da96cc92d37ac776e0d1192ebd5832b9d5d180edc34d6 golang-tests-1.26.4-1.el9_8.noarch.rpm SHA-256: f41f4bc66f6b9f876c96ae36a9b7c6c98b9e2f0d36b189a2718cf9a787bea1be Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 s390x go-toolset-1.26.4-1.el9_8.s390x.rpm SHA-256: 70785c28d58890ab177b7654834c9175564e13d2d2c6467c97ce7f8c2a046cf3 golang-1.26.4-1.el9_8.s390x.rpm SHA-256: ab88d3273c82dda761a1ece90ceed7a92dd5fafbcef9cc71150153bf62b7aea6 golang-bin-1.26.4-1.el9_8.s390x.rpm SHA-256: 73fea3c3e7a96951df6f519994a501256bac2b656744f354de44c82865235097 golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedafeb golang-race-1.26.4-1.el9_8.s390x.rpm SHA-256: 737d400020660d42ba8bab6b893261534a84a05b0c7ac78677dc0ebd59813d7b golang-src-1.26.4-1.el9_8.noarch.rpm SHA-256: 879164e562d5f1921e4da96cc92d37ac776e0d1192ebd5832b9d5d180edc34d6 golang-tests-1.26.4-1.el9_8.noarch.rpm SHA-256: f41f4bc66f6b9f876c96ae36a9b7c6c98b9e2f0d36b189a2718cf9a787bea1be Red Hat Enterprise Linux for Power, little endian 9 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 ppc64le go-toolset-1.26.4-1.el9_8.ppc64le.rpm SHA-256: 818e89bfd5031c8d9b35c800461bd460eabd026a58446524edfc9a3bbd24ff2d golang-1.26.4-1.el9_8.ppc64le.rpm SHA-256: 5b5108e52c33d18b273c091e0a99d550d545f1036fd72e2b1116cd1974b5eb3d golang-bin-1.26.4-1.el9_8.ppc64le.rpm SHA-256: f45343ea0b9cdc3f7e394012b38b1c2c250ba8af7d413f2ab3118d0092579a52 golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedafeb golang-race-1.26.4-1.el9_8.ppc64le.rpm SHA-256: 37642a3fd9e3f0c1191b48b3fab6c13cb071e4e899f95ed6f4d110c9d9e50c7a golang-src-1.26.4-1.el9_8.noarch.rpm SHA-256: 879164e562d5f1921e4da96cc92d37ac776e0d1192ebd5832b9d5d180edc34d6 golang-tests-1.26.4-1.el9_8.noarch.rpm SHA-256: f41f4bc66f6b9f876c96ae36a9b7c6c98b9e2f0d36b189a2718cf9a787bea1be Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 ppc64le go-toolset-1.26.4-1.el9_8.ppc64le.rpm SHA-256: 818e89bfd5031c8d9b35c800461bd460eabd026a58446524edfc9a3bbd24ff2d golang-1.26.4-1.el9_8.ppc64le.rpm SHA-256: 5b5108e52c33d18b273c091e0a99d550d545f1036fd72e2b1116cd1974b5eb3d golang-bin-1.26.4-1.el9_8.ppc64le.rpm SHA-256: f45343ea0b9cdc3f7e394012b38b1c2c250ba8af7d413f2ab3118d0092579a52 golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedafeb golang-race-1.26.4-1.el9_8.ppc64le.rpm SHA-256: 37642a3fd9e3f0c1191b48b3fab6c13cb071e4e899f95ed6f4d110c9d9e50c7a golang-src-1.26.4-1.el9_8.noarch.rpm SHA-256: 879164e562d5f1921e4da96cc92d37ac776e0d1192ebd5832b9d5d180edc34d6 golang-tests-1.26.4-1.el9_8.noarch.rpm SHA-256: f41f4bc66f6b9f876c96ae36a9b7c6c98b9e2f0d36b189a2718cf9a787bea1be Red Hat Enterprise Linux for ARM 64 9 SRPM golang-1.26.4-1.el9_8.src.rpm SHA-256: 61a8a1c07fba4e15065dce5620b0cd29dd194dc79bb8a99aa50727af40a2c402 aarch64 go-toolset-1.26.4-1.el9_8.aarch64.rpm SHA-256: 1f5ca76e76520c8db0ed2e85fe3039ced09bcd428c7dc921e17286f74422a447 golang-1.26.4-1.el9_8.aarch64.rpm SHA-256: b9e3163859972be8b2c3e7796faff26e82e1ff78641056edbd62c96bc9f03f38 golang-bin-1.26.4-1.el9_8.aarch64.rpm SHA-256: 20201ae9178dcd3d20b357d67c68cacb861bebbb5506ecb076cb1486d45439c2 golang-docs-1.26.4-1.el9_8.noarch.rpm SHA-256: be456f9a4c1b8ecd1238c4566d4e025f31a3ceb4220563dff6691272edf733c1 golang-misc-1.26.4-1.el9_8.noarch.rpm SHA-256: 3e51f14a69721e2de9a835cef51030022e6bea59a42236f27160adb05cedaf