CVE-2026-43034

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Set ctxm->type from the current loop\nvariable instead of depending on resp->type.\n\nAlso update the loop to advance type from next_valid_type in the for\nstatement, which keeps the control flow simpler for non-valid and\nunchanged entries."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad se ha resuelto:\n\nbnxt_en: establecer el tipo de almacenamiento de respaldo a partir del tipo de consulta\n\nbnxt_hwrm_func_backing_store_qcaps_v2() almacena resp -> type de la respuesta del firmware en ctxm -> type y posteriormente utiliza ese valor para indexar arreglos fijos de metadatos de almacenamiento de respaldo como ctx_arr[] y bnxt_bstore_to_trace[].\n\nctxm -> type est\u00e1 fijado por el tipo de consulta de almacenamiento de respaldo actual y coincide con el \u00edndice del arreglo de ctx -> ctx_arr. Establecer ctxm -> type a partir de la variable de bucle actual en lugar de depender de resp -> type.\n\nTambi\u00e9n actualizar el bucle para avanzar el tipo desde next_valid_type en la sentencia for, lo que mantiene el flujo de control m\u00e1s simple para entradas no v\u00e1lidas y sin cambios."}], "id": "CVE-2026-43034", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43034", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:26:40.782752Z", "version": "2.0.3"}}]}, "published": "2026-05-01T15:16:48.037", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/29732b68a6816a815d58e9ab229844c23617e1e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4ee937107d52f9e5c350e4b5e629760e328b3d9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c66a27ca534580de1d28cf568f59fe5f50d43e15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c8d53b70166d1dc463ef42adb7293e1a770822c7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: bnxt_en: set backing store type from query type", "id": "2464479", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464479"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-823", "details": ["A flaw was found in the `bnxt_en` driver within the Linux kernel. This vulnerability arises from the `bnxt_hwrm_func_backing_store_qcaps_v2()` function using an incorrect type value from the firmware response to index internal data arrays. This improper indexing could lead to memory corruption, potentially causing system instability or a Denial of Service (DoS)."], "name": "CVE-2026-43034", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43034\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43034\nhttps://lore.kernel.org/linux-cve-announce/2026050102-CVE-2026-43034-f539@gregkh/T"], "threat_severity": "Moderate"}

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