CVE-2026-46384

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"NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "iskorotkov", "product": "avro", "versions": [{"status": "affected", "version": "< 2.33.0"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:cryostat:4::el9"], "vendor": "Red Hat", "product": "Cryostat 4 on RHEL 9", "versions": [{"status": "unaffected", "version": "4.2.0-19", "lessThan": "*", "versionType": "rpm"}], "packageName": "cryostat/cryostat-storage-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:multicluster_globalhub:1.5::el9"], "vendor": "Red Hat", "product": "Multicluster Global Hub 1.5.4", "versions": [{"status": "unaffected", "version": "1784562060", "lessThan": "*", "versionType": "rpm"}], "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:multicluster_globalhub:1.7::el9"], "vendor": "Red Hat", "product": "Multicluster Global Hub 1.7.0", "versions": [{"status": "unaffected", "version": "1784906628", "lessThan": "*", "versionType": "rpm"}], "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.11::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.11", "versions": [{"status": "unaffected", "version": "1783578847", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/acm-grafana-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:acm:2.13::el9"], "vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2.13", "versions": [{"status": "unaffected", "version": "1782383730", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhacm2/acm-grafana-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:multicluster_globalhub:1.4::el9"], "vendor": "Red Hat", "product": "Red Hat multicluster global hub 1.4.2", "versions": [{"status": "unaffected", "version": "1784060681", "lessThan": "*", "versionType": "rpm"}], "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:multicluster_globalhub:1.6::el9"], "vendor": "Red Hat", "product": "Red Hat multicluster global hub 1.6.0", "versions": [{"status": "unaffected", "version": "1784561376", "lessThan": "*", "versionType": "rpm"}], "packageName": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "grafana", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "grafana", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "grafana", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:hummingbird:1"], "vendor": "Red Hat", "product": "Red Hat Hardened Images", "packageName": "opentelemetry-collector-contrib", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}]}], "published": "2026-05-29T20:16:27.847", "references": [{"url": "https://github.com/iskorotkov/avro/security/advisories/GHSA-mc57-h6j3-3hmv", "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:30651", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:41030", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:41064", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:42852", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:44622", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:47149", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:48151", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-46384", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483482", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46384.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-190"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, several Avro decoder paths read attacker-controlled 64-bit values from the wire format and either narrowed them to platform-sized int before bounds-checking, or summed them with overflow-prone signed-int arithmetic. On 32-bit targets (GOARCH=386, arm, mips, wasm, etc.), the truncation paths can silently bypass byte-slice limits, select the wrong union branch, or hit the OCF negative-make panic via wrap. Three sub-issues are not 32-bit-specific: cumulative-size arithmetic overflow in arrayDecoder.Decode / mapDecoder.Decode / mapDecoderUnmarshaler.Decode (wraps at math.MaxInt64 on amd64 / arm64 and bypasses MaxSliceAllocSize / MaxMapAllocSize), math.MinInt negation in block-header handling, and make([]byte, size) with a negative size in OCF block reads \u2014 all three panic or bypass caps on any platform, giving an attacker a denial-of-service primitive there. This vulnerability is fixed in 2.33.0."}, {"lang": "es", "value": "iskorotkov/avro es un c\u00f3dec Avro r\u00e1pido para Go. Antes de la versi\u00f3n 2.33.0, varias rutas del decodificador Avro le\u00edan valores de 64 bits controlados por el atacante del formato de transmisi\u00f3n y los reduc\u00edan a un entero (int) del tama\u00f1o de la plataforma antes de la verificaci\u00f3n de l\u00edmites, o los sumaban con aritm\u00e9tica de enteros con signo propensa a desbordamientos. En objetivos de 32 bits (GOARCH=386, arm, mips, wasm, etc.), las rutas de truncamiento pueden eludir silenciosamente los l\u00edmites de las porciones de bytes, seleccionar la rama de uni\u00f3n incorrecta o provocar el p\u00e1nico 'negative-make' de OCF a trav\u00e9s de un 'wrap'. Tres subproblemas no son espec\u00edficos de 32 bits: desbordamiento aritm\u00e9tico de tama\u00f1o acumulativo en arrayDecoder.Decode / mapDecoder.Decode / mapDecoderUnmarshaler.Decode (se ajusta en math.MaxInt64 en amd64 / arm64 y elude MaxSliceAllocSize / MaxMapAllocSize), negaci\u00f3n de math.MinInt en el manejo de encabezados de bloque, y make([]byte, size) con un tama\u00f1o negativo en las lecturas de bloques OCF - los tres provocan p\u00e1nico o eluden los l\u00edmites en cualquier plataforma, dando al atacante una primitiva de denegaci\u00f3n de servicio all\u00ed. Esta vulnerabilidad se corrige en la versi\u00f3n 2.33.0."}], "lastModified": "2026-08-03T13:18:41.093", "sourceIdentifier": "security-advisories@github.com"}