{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for the go-toolset:rhel8 module is now available for Red Hat Enterprise Linux 8.\n\nRed Hat Product Security has rated this update as having a security impact of Important. 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.", "title": "Topic" }, { "category": "general", "text": "Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. \n\nSecurity Fix(es):\n\n* golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)\n\n* crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)\n\n* crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)\n\n* golang: cmd/compile: no-op interface conversion bypasses overlap checking (CVE-2026-27144)\n\n* cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names (CVE-2026-27140)\n\n* golang: cmd/compile: possible memory corruption after bound check elimination (CVE-2026-27143)\n\nFor 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.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2026:10704", "url": "https://access.redhat.com/errata/RHSA-2026:10704" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2456336", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456336" }, { "category": "external", "summary": "2456338", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456338" }, { "category": "external", "summary": "2456339", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456339" }, { "category": "external", "summary": "2456340", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456340" }, { "category": "external", "summary": "2456341", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456341" }, { "category": "external", "summary": "2456342", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456342" }, { "category": "external", "summary": "RHEL-169932", "url": "https://issues.redhat.com/browse/RHEL-169932" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_10704.json" } ], "title": "Red Hat Security Advisory: go-toolset:rhel8 security update", "tracking": { "current_release_date": "2026-07-02T00:08:02+00:00", "generator": { "date": "2026-07-02T00:08:02+00:00", "engine": { "name": "Red Hat 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"A flaw was found in the Go programming language (golang) and its command-line tool (cmd/go). A remote attacker could exploit this during the build process by crafting malicious SWIG (Simplified Wrapper and Interface Generator) file names that contain \"cgo\" and specific payloads. This could lead to code smuggling and arbitrary code execution, bypassing trust mechanisms and allowing the attacker to run unauthorized code.", "title": "Vulnerability description" }, { "category": "summary", "text": "cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", 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"AppStream-8.10.0.Z.MAIN.EUS:golang-race-0:1.25.9-1.module+el8.10.0+24226+c418b32c.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:golang-src-0:1.25.9-1.module+el8.10.0+24226+c418b32c.noarch::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:golang-tests-0:1.25.9-1.module+el8.10.0+24226+c418b32c.noarch::go-toolset:rhel8" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names" }, { "cve": "CVE-2026-27143", "cwe": { "id": "CWE-733", "name": "Compiler Optimization Removal or Modification of Security-critical Code" }, "discovery_date": "2026-04-08T02:01:29.491546+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2456342" } ], "notes": [ { "category": "description", "text": "A flaw was found in the cmd/compile package in the Go standard library. The compiler fails to correctly check for integer overflow or underflow in arithmetic operations involving loop induction variables. As a result, the compiler allows invalid memory indexing to occur at runtime, potentially leading to memory corruption.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: cmd/compile: possible memory corruption after bound check elimination", "title": "Vulnerability summary" }, { "category": "other", "text": "This vulnerability is only exploitable in applications that contain a loop structure that relies on an induction variable. An induction variable is a variable that gets modified, usually incremented or decremented, by a predictable amount on each iteration. Inside the loop, the induction variable must be directly used as the index to access or modify elements within an array or a slice. Additionally, an attacker must be able to cause an integer overflow or underflow in the induction variable to trigger this issue. Due to these reasons, this flaw has been rated with a moderate severity.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-debuginfo-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", 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"references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-27143" }, { "category": "external", "summary": "RHBZ#2456342", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456342" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-27143", "url": "https://www.cve.org/CVERecord?id=CVE-2026-27143" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-27143", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27143" }, { "category": "external", "summary": "https://go.dev/cl/763765", "url": "https://go.dev/cl/763765" }, { "category": "external", "summary": "https://go.dev/issue/78333", "url": "https://go.dev/issue/78333" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU", "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-4868", "url": "https://pkg.go.dev/vuln/GO-2026-4868" } ], "release_date": "2026-04-08T01:06:57.168000+00:00", "remediations": [ { "category": "vendor_fix", "date": "2026-04-27T02:21:42+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-debuginfo-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", 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"restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2026:10704" }, { "category": "workaround", "details": "To mitigate this vulnerability, strictly sanitize and enforce bounds checking on any untrusted user input that influences loop counters, iteration limits, or memory indices. 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A no-op interface conversion prevented the compiler from correctly identifying non-overlapping memory moves. As a result, the compiler allows unsafe memory move operations to occur at runtime, potentially causing data corruption, memory corruption or unexpected application behavior.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: cmd/compile: no-op interface conversion bypasses overlap checking", "title": "Vulnerability summary" }, { "category": "other", "text": "This issue is only exploitable in applications that contain a memory move or copy operation that is subject to a no-op (no-operation) interface conversion. Furthermore, the source and destination memory addresses involved in the move or copy must overlap and an attacker must be able to supply an input that triggers this specific operation. Due to these reasons, this flaw has been rated with a moderate severity.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-debuginfo-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", 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"references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-27144" }, { "category": "external", "summary": "RHBZ#2456340", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456340" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-27144", "url": "https://www.cve.org/CVERecord?id=CVE-2026-27144" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-27144", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27144" }, { "category": "external", "summary": "https://go.dev/cl/763764", "url": "https://go.dev/cl/763764" }, { "category": "external", "summary": "https://go.dev/issue/78371", "url": "https://go.dev/issue/78371" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU", "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-4867", "url": "https://pkg.go.dev/vuln/GO-2026-4867" } ], "release_date": "2026-04-08T01:06:56.908000+00:00", "remediations": [ { "category": "vendor_fix", "date": "2026-04-27T02:21:42+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-debuginfo-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", 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"A flaw was found in the Go standard library packages `crypto/x509` and `crypto/tls`. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being performed. This can result in a denial of service (DoS) condition, making the affected system or application unavailable to legitimate users.", "title": "Vulnerability description" }, { "category": "summary", "text": "crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", 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"AppStream-8.10.0.Z.MAIN.EUS:golang-race-0:1.25.9-1.module+el8.10.0+24226+c418b32c.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:golang-src-0:1.25.9-1.module+el8.10.0+24226+c418b32c.noarch::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:golang-tests-0:1.25.9-1.module+el8.10.0+24226+c418b32c.noarch::go-toolset:rhel8" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building" }, { "cve": "CVE-2026-32282", "cwe": { "id": "CWE-367", "name": "Time-of-check Time-of-use (TOCTOU) Race Condition" }, "discovery_date": "2026-04-08T02:01:12.683211+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2456336" } ], "notes": [ { "category": "description", "text": "A flaw was found in the internal/syscall/unix package in the Go standard library. If the target of the `Root.Chmod` function is replaced with a symbolic link during execution, specifically after `Root.Chmod` checks the target but before acting, the `chmod` operation will be performed on the file the symbolic link points to. This issue can bypass directory restrictions and lead to unauthorized permission changes on the filesystem.", "title": "Vulnerability description" }, { "category": "summary", "text": "golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root", "title": "Vulnerability summary" }, { "category": "other", "text": "To exploit this issue, an attacker needs access to the system and the required permissions to create a symbolic link. Additionally, the attacker must swap the target file with a symbolic link in the exact window after the `Root.Chmod` function checks its target but before acting. Due to these conditions, this flaw has been rated with a moderate severity.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-debuginfo-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", 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"references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-32282" }, { "category": "external", "summary": "RHBZ#2456336", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456336" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-32282", "url": "https://www.cve.org/CVERecord?id=CVE-2026-32282" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-32282", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32282" }, { "category": "external", "summary": "https://go.dev/cl/763761", "url": "https://go.dev/cl/763761" }, { "category": "external", "summary": "https://go.dev/issue/78293", "url": "https://go.dev/issue/78293" }, { "category": "external", "summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU", "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU" }, { "category": "external", "summary": "https://pkg.go.dev/vuln/GO-2026-4864", "url": "https://pkg.go.dev/vuln/GO-2026-4864" } ], "release_date": "2026-04-08T01:06:55.953000+00:00", "remediations": [ { "category": "vendor_fix", "date": "2026-04-27T02:21:42+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-debuginfo-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", 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"threats": [ { "category": "impact", "details": "Moderate" } ], "title": "golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root" }, { "cve": "CVE-2026-32283", "cwe": { "id": "CWE-764", "name": "Multiple Locks of a Critical Resource" }, "discovery_date": "2026-04-08T02:01:16.213799+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2456338" } ], "notes": [ { "category": "description", "text": "A flaw was found in the `crypto/tls` package within the Go (golang) standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock, leading to uncontrolled consumption of resources and ultimately a denial of service (DoS).", "title": "Vulnerability description" }, { "category": "summary", "text": "crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.aarch64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.ppc64le::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:delve-0:1.25.2-1.module+el8.10.0+23746+9db33b5e.src::go-toolset:rhel8", 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"AppStream-8.10.0.Z.MAIN.EUS:golang-race-0:1.25.9-1.module+el8.10.0+24226+c418b32c.x86_64::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:golang-src-0:1.25.9-1.module+el8.10.0+24226+c418b32c.noarch::go-toolset:rhel8", "AppStream-8.10.0.Z.MAIN.EUS:golang-tests-0:1.25.9-1.module+el8.10.0+24226+c418b32c.noarch::go-toolset:rhel8" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages" } ] }