Red Hat Product Errata RHSA-2026:29980 - Security Advisory Issued: 2026-06-25 Updated: 2026-06-25 RHSA-2026:29980 - 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 10. 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-10.2.z] (JIRA:RHEL-183347) 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 10 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64 Red Hat Enterprise Linux for IBM z Systems 10 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 s390x Red Hat Enterprise Linux for Power, little endian 10 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le Red Hat Enterprise Linux for ARM 64 10 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 s390x Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2 s390x Fixes BZ - 2484205 - CVE-2026-42507 net/textproto: golang: Golang net/textproto: Misleading error messages via input injection RHEL-183347 - Update Go to version 1.26.4+1 [rhel-10.2.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 10 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 x86_64 go-toolset-1.26.4-1.el10_2.x86_64.rpm SHA-256: e06933188fa1d6ea906139aa865245e88c60dfa63a202b36ac60b3cca1d35113 golang-1.26.4-1.el10_2.x86_64.rpm SHA-256: 2d7f52c10405cfee2e09f37402ca7e9be1a689f61fbfe66f11f4c09551239645 golang-bin-1.26.4-1.el10_2.x86_64.rpm SHA-256: f2bf060d8dbd73b6f147e68db4079f5047a48279f62409b5b6bfd1fe538eeb13 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: ecaa756874c3454691937d06e035ee7430ac369e2220deb82907755b99f5262f golang-race-1.26.4-1.el10_2.x86_64.rpm SHA-256: b1616aadd5ddef26f70034f1e48fd945aa66b0d4d81b50d04ab42bd49f80aaff golang-src-1.26.4-1.el10_2.noarch.rpm SHA-256: d286218a819fd896fc9d52004bf047305f6bbf9d8583541d655eea1b5b723ff6 golang-tests-1.26.4-1.el10_2.noarch.rpm SHA-256: 92624dc1ec48f919eea77d4b99500ac3b7c6465482523cc71c4ebb9484d7e974 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 x86_64 go-toolset-1.26.4-1.el10_2.x86_64.rpm SHA-256: e06933188fa1d6ea906139aa865245e88c60dfa63a202b36ac60b3cca1d35113 golang-1.26.4-1.el10_2.x86_64.rpm SHA-256: 2d7f52c10405cfee2e09f37402ca7e9be1a689f61fbfe66f11f4c09551239645 golang-bin-1.26.4-1.el10_2.x86_64.rpm SHA-256: f2bf060d8dbd73b6f147e68db4079f5047a48279f62409b5b6bfd1fe538eeb13 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: ecaa756874c3454691937d06e035ee7430ac369e2220deb82907755b99f5262f golang-race-1.26.4-1.el10_2.x86_64.rpm SHA-256: b1616aadd5ddef26f70034f1e48fd945aa66b0d4d81b50d04ab42bd49f80aaff golang-src-1.26.4-1.el10_2.noarch.rpm SHA-256: d286218a819fd896fc9d52004bf047305f6bbf9d8583541d655eea1b5b723ff6 golang-tests-1.26.4-1.el10_2.noarch.rpm SHA-256: 92624dc1ec48f919eea77d4b99500ac3b7c6465482523cc71c4ebb9484d7e974 Red Hat Enterprise Linux for IBM z Systems 10 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 s390x go-toolset-1.26.4-1.el10_2.s390x.rpm SHA-256: 2ef88db7e44b13108d5779b77b9f518e38e863231bc1fcd502e632dbad3cb4db golang-1.26.4-1.el10_2.s390x.rpm SHA-256: c81887a5257c1189752abfe620cce6c9d89139b006e2dfca36d0c206e7138219 golang-bin-1.26.4-1.el10_2.s390x.rpm SHA-256: 6a029d437988afef2ffcd93e3f7e4bb3ad437b8b228b337e483c53b1d455c887 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: ecaa756874c3454691937d06e035ee7430ac369e2220deb82907755b99f5262f golang-race-1.26.4-1.el10_2.s390x.rpm SHA-256: 9afcad95b7e18f6b18607671ff32b46884dcb3aec1d1aad6cb04044fbc4194d1 golang-src-1.26.4-1.el10_2.noarch.rpm SHA-256: d286218a819fd896fc9d52004bf047305f6bbf9d8583541d655eea1b5b723ff6 golang-tests-1.26.4-1.el10_2.noarch.rpm SHA-256: 92624dc1ec48f919eea77d4b99500ac3b7c6465482523cc71c4ebb9484d7e974 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 s390x go-toolset-1.26.4-1.el10_2.s390x.rpm SHA-256: 2ef88db7e44b13108d5779b77b9f518e38e863231bc1fcd502e632dbad3cb4db golang-1.26.4-1.el10_2.s390x.rpm SHA-256: c81887a5257c1189752abfe620cce6c9d89139b006e2dfca36d0c206e7138219 golang-bin-1.26.4-1.el10_2.s390x.rpm SHA-256: 6a029d437988afef2ffcd93e3f7e4bb3ad437b8b228b337e483c53b1d455c887 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: ecaa756874c3454691937d06e035ee7430ac369e2220deb82907755b99f5262f golang-race-1.26.4-1.el10_2.s390x.rpm SHA-256: 9afcad95b7e18f6b18607671ff32b46884dcb3aec1d1aad6cb04044fbc4194d1 golang-src-1.26.4-1.el10_2.noarch.rpm SHA-256: d286218a819fd896fc9d52004bf047305f6bbf9d8583541d655eea1b5b723ff6 golang-tests-1.26.4-1.el10_2.noarch.rpm SHA-256: 92624dc1ec48f919eea77d4b99500ac3b7c6465482523cc71c4ebb9484d7e974 Red Hat Enterprise Linux for Power, little endian 10 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 ppc64le go-toolset-1.26.4-1.el10_2.ppc64le.rpm SHA-256: de76e4e06ef607dfbe4366922da8d705f49999d2deb93584447876be81d3ec78 golang-1.26.4-1.el10_2.ppc64le.rpm SHA-256: 4b00bcc9a39beb88d9f9bc83bc73a59be18c1fd9d4f1c8a4dd9920c89f36d90e golang-bin-1.26.4-1.el10_2.ppc64le.rpm SHA-256: d499522f2e2c636851c2d387db7b26e20051f5198981846447c4a9057a922ad9 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: ecaa756874c3454691937d06e035ee7430ac369e2220deb82907755b99f5262f golang-race-1.26.4-1.el10_2.ppc64le.rpm SHA-256: 336a5d5ddb78939944212fc07c671f4283437d4dadaf43fdc139dfcf3219ed21 golang-src-1.26.4-1.el10_2.noarch.rpm SHA-256: d286218a819fd896fc9d52004bf047305f6bbf9d8583541d655eea1b5b723ff6 golang-tests-1.26.4-1.el10_2.noarch.rpm SHA-256: 92624dc1ec48f919eea77d4b99500ac3b7c6465482523cc71c4ebb9484d7e974 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 ppc64le go-toolset-1.26.4-1.el10_2.ppc64le.rpm SHA-256: de76e4e06ef607dfbe4366922da8d705f49999d2deb93584447876be81d3ec78 golang-1.26.4-1.el10_2.ppc64le.rpm SHA-256: 4b00bcc9a39beb88d9f9bc83bc73a59be18c1fd9d4f1c8a4dd9920c89f36d90e golang-bin-1.26.4-1.el10_2.ppc64le.rpm SHA-256: d499522f2e2c636851c2d387db7b26e20051f5198981846447c4a9057a922ad9 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: ecaa756874c3454691937d06e035ee7430ac369e2220deb82907755b99f5262f golang-race-1.26.4-1.el10_2.ppc64le.rpm SHA-256: 336a5d5ddb78939944212fc07c671f4283437d4dadaf43fdc139dfcf3219ed21 golang-src-1.26.4-1.el10_2.noarch.rpm SHA-256: d286218a819fd896fc9d52004bf047305f6bbf9d8583541d655eea1b5b723ff6 golang-tests-1.26.4-1.el10_2.noarch.rpm SHA-256: 92624dc1ec48f919eea77d4b99500ac3b7c6465482523cc71c4ebb9484d7e974 Red Hat Enterprise Linux for ARM 64 10 SRPM golang-1.26.4-1.el10_2.src.rpm SHA-256: 7963006a04cc940e42da2eaa488b18a590f1fbe96dbb572f24c2ca2bc06d6e36 aarch64 go-toolset-1.26.4-1.el10_2.aarch64.rpm SHA-256: 8280aa4af5516a449130ccd89c3ed16c69fdeb4a2b4ae325dc9db3e69243ddb8 golang-1.26.4-1.el10_2.aarch64.rpm SHA-256: 1c8e80a020459a1434ec8a6e5d8dff5c8a83363a86ab232d859b56482d419e0a golang-bin-1.26.4-1.el10_2.aarch64.rpm SHA-256: 25a639f75dea3578d131d95faaf3cd7ff1a8596bb1aa137fb8fb40452c457431 golang-docs-1.26.4-1.el10_2.noarch.rpm SHA-256: 9744f2c63dfcc3dc121373cf0959fb703f10478aea8d266e3fc7480e7b28e863 golang-misc-1.26.4-1.el10_2.noarch.rpm SHA-256: e