CVE-2026-43017

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MGMT_MESH_SEND_SIZE only covers the fixed header, so a\ntruncated command can still pass the existing 20..50 byte range\ncheck and later drive the async mesh send path past the end of the\nqueued command buffer.\n\nKeep rejecting zero-length and oversized advertising payloads, but\nvalidate adv_data_len explicitly and require the command length to\nexactly match the flexible array size before queueing the request."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: MGMT: validar la longitud de la carga \u00fatil de publicidad de env\u00edo de malla\n\nmesh_send() actualmente limita MGMT_OP_MESH_SEND por la longitud total del comando, pero nunca verifica que los bytes suministrados para el array flexible adv_data[] realmente coincidan con el campo adv_data_len incrustado. MGMT_MESH_SEND_SIZE solo cubre la cabecera fija, por lo que un comando truncado a\u00fan puede pasar la comprobaci\u00f3n de rango existente de 20..50 bytes y posteriormente impulsar la ruta de env\u00edo de malla as\u00edncrona m\u00e1s all\u00e1 del final del b\u00fafer de comandos en cola.\n\nSeguir rechazando las cargas \u00fatiles de publicidad de longitud cero y sobredimensionadas, pero validar adv_data_len expl\u00edcitamente y requerir que la longitud del comando coincida exactamente con el tama\u00f1o del array flexible antes de poner en cola la solicitud."}], "id": "CVE-2026-43017", "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-2026-43017", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:25:56.534475Z", "version": "2.0.3"}}]}, "published": "2026-05-01T15:16:45.837", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0b706fb2294aff3adfd54653bda1b5e356ad4566"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/244b639e6a3a8e26241e201004a3a9f764476631"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/24fa32369cf15d8fc918bdfe94097b12e6acada0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/562ed1954f0c1bff3422b7b752bd3dacf185edbf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bda93eec78cdbfe5cda00785cefebd443e56b88b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edb5898cfa91afe7e8f83eda18d93034c953d632"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: Bluetooth: MGMT: validate mesh send advertising payload length", "id": "2464357", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464357"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-130", "details": ["A flaw was found in the Bluetooth subsystem of the Linux kernel. A remote attacker could exploit this by sending a specially crafted Bluetooth Mesh advertising payload. The system fails to properly validate the length of the advertising data against the provided payload, leading to an out-of-bounds write. This memory corruption could result in a denial of service."], "name": "CVE-2026-43017", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "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-2026-43017\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43017\nhttps://lore.kernel.org/linux-cve-announce/2026050157-CVE-2026-43017-fefa@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b338d91703fae6f6afd67f3f75caa3b8f36ddef3,24fa32369cf15d8fc918bdfe94097b12e6acada0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b338d91703fae6f6afd67f3f75caa3b8f36ddef3,244b639e6a3a8e26241e201004a3a9f764476631)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b338d91703fae6f6afd67f3f75caa3b8f36ddef3,0b706fb2294aff3adfd54653bda1b5e356ad4566)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b338d91703fae6f6afd67f3f75caa3b8f36ddef3,edb5898cfa91afe7e8f83eda18d93034c953d632)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b338d91703fae6f6afd67f3f75caa3b8f36ddef3,562ed1954f0c1bff3422b7b752bd3dacf185edbf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b338d91703fae6f6afd67f3f75caa3b8f36ddef3,bda93eec78cdbfe5cda00785cefebd443e56b88b)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.168,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.134,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.81,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-01T20:15:24.442557+00:00", "updated": "2026-05-08T20:30:16.046810+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}