CVE-2025-39889

{"id": "CVE-2025-39889", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39889", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T17:37:06.505788Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4f911a538e089cce808a15dc3277250f4f8daef9", "lessThan": "ed503d340a501e414114ddc614a3aae4f6e9eae2", "versionType": "git"}, {"status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "lessThan": "24b2cdfc16e9bd6ab3d03b8e01c590755bd3141f", "versionType": "git"}, {"status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "lessThan": "c6d527bbd3d3896375079f5dbc8b7f96734a3ba5", "versionType": "git"}, {"status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "lessThan": "9e3114958d87ea88383cbbf38c89e04b8ea1bce5", "versionType": "git"}, {"status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "lessThan": "d49798ecd26e0ee7995a7fc1e90ca5cd9b4402d6", "versionType": "git"}, {"status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "lessThan": "d4ca2fd218caafbf50e3343ba1260c6a23b5676a", "versionType": "git"}, {"status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "lessThan": "522e9ed157e3c21b4dd623c79967f72c21e45b78", "versionType": "git"}], "programFiles": ["net/bluetooth/l2cap_core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.11"}, {"status": "unaffected", "version": "0", "lessThan": "5.11", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.181", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.135", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.88", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.25", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.14.4", "versionType": "semver", "lessThanOrEqual": "6.14.*"}, {"status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/bluetooth/l2cap_core.c"], "defaultStatus": "affected"}]}], "published": "2025-09-24T11:15:32.780", "references": [{"url": "https://git.kernel.org/stable/c/24b2cdfc16e9bd6ab3d03b8e01c590755bd3141f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/522e9ed157e3c21b4dd623c79967f72c21e45b78", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9e3114958d87ea88383cbbf38c89e04b8ea1bce5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c6d527bbd3d3896375079f5dbc8b7f96734a3ba5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d49798ecd26e0ee7995a7fc1e90ca5cd9b4402d6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d4ca2fd218caafbf50e3343ba1260c6a23b5676a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ed503d340a501e414114ddc614a3aae4f6e9eae2", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-326"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-326"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Check encryption key size on incoming connection\n\nThis is required for passing GAP/SEC/SEM/BI-04-C PTS test case:\n Security Mode 4 Level 4, Responder - Invalid Encryption Key Size\n - 128 bit\n\nThis tests the security key with size from 1 to 15 bytes while the\nSecurity Mode 4 Level 4 requests 16 bytes key size.\n\nCurrently PTS fails with the following logs:\n- expected:Connection Response:\n Code: [3 (0x03)] Code\n Identifier: (lt)WildCard: Exists(gt)\n Length: [8 (0x0008)]\n Destination CID: (lt)WildCard: Exists(gt)\n Source CID: [64 (0x0040)]\n Result: [3 (0x0003)] Connection refused - Security block\n Status: (lt)WildCard: Exists(gt),\nbut received:Connection Response:\n Code: [3 (0x03)] Code\n Identifier: [1 (0x01)]\n Length: [8 (0x0008)]\n Destination CID: [64 (0x0040)]\n Source CID: [64 (0x0040)]\n Result: [0 (0x0000)] Connection Successful\n Status: [0 (0x0000)] No further information available\n\nAnd HCI logs:\n< HCI Command: Read Encrypti.. (0x05|0x0008) plen 2\n Handle: 14 Address: 00:1B:DC:F2:24:10 (Vencer Co., Ltd.)\n> HCI Event: Command Complete (0x0e) plen 7\n Read Encryption Key Size (0x05|0x0008) ncmd 1\n Status: Success (0x00)\n Handle: 14 Address: 00:1B:DC:F2:24:10 (Vencer Co., Ltd.)\n Key size: 7\n> ACL Data RX: Handle 14 flags 0x02 dlen 12\n L2CAP: Connection Request (0x02) ident 1 len 4\n PSM: 4097 (0x1001)\n Source CID: 64\n< ACL Data TX: Handle 14 flags 0x00 dlen 16\n L2CAP: Connection Response (0x03) ident 1 len 8\n Destination CID: 64\n Source CID: 64\n Result: Connection successful (0x0000)\n Status: No further information available (0x0000)"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: l2cap: Verificar el tama\u00f1o de la clave de cifrado en la conexi\u00f3n entrante\n\nEsto es necesario para aprobar el caso de prueba GAP/SEC/SEM/BI-04-C PTS:\n Modo de seguridad 4 Nivel 4, Respondedor - Tama\u00f1o de clave de cifrado no v\u00e1lido\n - 128 bits\n\nEsto prueba la clave de seguridad con un tama\u00f1o de 1 a 15 bytes, mientras que el Modo de seguridad 4 Nivel 4 solicita un tama\u00f1o de clave de 16 bytes.\n\nActualmente, PTS falla con los siguientes registros:\n- esperado:Respuesta de conexi\u00f3n:\n C\u00f3digo: [3 (0x03)] C\u00f3digo\n Identificador: (lt)WildCard: Exists(gt)\n Longitud: [8 (0x0008)]\n CID de destino: (lt)WildCard: Exists(gt)\n CID de origen: [64 (0x0040)]\n Resultado: [3 (0x0003)] Conexi\u00f3n rechazada - Bloqueo de seguridad\n Estado: (lt)WildCard: Exists(gt),\npero recibido:Respuesta de conexi\u00f3n:\n C\u00f3digo: [3 (0x03)] C\u00f3digo\n Identificador: [1 (0x01)]\n Longitud: [8 (0x0008)]\n CID de destino: [64 (0x0040)]\n CID de origen: [64 (0x0040)]\n Resultado: [0 (0x0000)] Conexi\u00f3n exitosa\n Estado: [0 (0x0000)] No hay m\u00e1s informaci\u00f3n disponible\n\nY registros HCI:\n< Comando HCI: Leer Cifrado.. (0x05|0x0008) plen 2\n Handle: 14 Direcci\u00f3n: 00:1B:DC:F2:24:10 (Vencer Co., Ltd.)\n> Evento HCI: Comando Completado (0x0e) plen 7\n Leer Tama\u00f1o de Clave de Cifrado (0x05|0x0008) ncmd 1\n Estado: \u00c9xito (0x00)\n Handle: 14 Direcci\u00f3n: 00:1B:DC:F2:24:10 (Vencer Co., Ltd.)\n Tama\u00f1o de clave: 7\n> Datos ACL RX: Handle 14 flags 0x02 dlen 12\n L2CAP: Solicitud de conexi\u00f3n (0x02) ident 1 len 4\n PSM: 4097 (0x1001)\n CID de origen: 64\n< Datos ACL TX: Handle 14 flags 0x00 dlen 16\n L2CAP: Respuesta de conexi\u00f3n (0x03) ident 1 len 8\n CID de destino: 64\n CID de origen: 64\n Resultado: Conexi\u00f3n exitosa (0x0000)\n Estado: No hay m\u00e1s informaci\u00f3n disponible (0x0000)"}], "lastModified": "2026-09-26T00:10:00.127", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12331C9E-F601-4EFC-899E-369F98DCC70B", "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5B9ACE29-7445-4B6F-B761-6367C005E275", "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD", "versionEndExcluding": "6.6.88", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E59EE65-FA6B-4AE4-8125-26135E28BF35", "versionEndExcluding": "6.12.25", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "29FA1A8E-1C2A-4B0B-B397-2C915ECDEDEE", "versionEndExcluding": "6.14.4", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}