{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39889", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.145Z", "datePublished": "2025-09-24T11:02:51.036Z", "dateUpdated": "2026-08-05T12:05:55.274Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:05:55.274Z"}, "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)"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 8.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "Bluetooth L2CAP accepts incoming connections with encryption key sizes 1-15 bytes when Security Mode 4 Level 4 requires 16 bytes. 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ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T17:37:26.762Z"}}]}}

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(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)"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.88", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.25", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.14.4", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15", "versionStartIncluding": "5.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-02T08:39:32.702Z"}}}, "cveMetadata": {"cveId": "CVE-2025-39889", "state": "PUBLISHED", "dateUpdated": "2026-04-02T08:39:32.702Z", "dateReserved": "2025-04-16T07:20:57.145Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-09-24T11:02:51.036Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/bluetooth/l2cap_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ed503d340a501e414114ddc614a3aae4f6e9eae2", "status": "affected", "version": "4f911a538e089cce808a15dc3277250f4f8daef9", "versionType": "git"}, {"lessThan": "24b2cdfc16e9bd6ab3d03b8e01c590755bd3141f", "status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "versionType": "git"}, {"lessThan": "c6d527bbd3d3896375079f5dbc8b7f96734a3ba5", "status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "versionType": "git"}, {"lessThan": "9e3114958d87ea88383cbbf38c89e04b8ea1bce5", "status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "versionType": "git"}, {"lessThan": "d49798ecd26e0ee7995a7fc1e90ca5cd9b4402d6", "status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "versionType": "git"}, {"lessThan": "d4ca2fd218caafbf50e3343ba1260c6a23b5676a", "status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "versionType": "git"}, {"lessThan": "522e9ed157e3c21b4dd623c79967f72c21e45b78", "status": "affected", "version": "288c06973daae4637f25a0d1bdaf65fdbf8455f9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/bluetooth/l2cap_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.11"}, {"lessThan": "5.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.181", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.135", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.88", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.25", "versionType": "semver"}, {"lessThanOrEqual": "6.14.*", "status": "unaffected", "version": "6.14.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "12331C9E-F601-4EFC-899E-369F98DCC70B", "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B9ACE29-7445-4B6F-B761-6367C005E275", "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD", "versionEndExcluding": "6.6.88", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E59EE65-FA6B-4AE4-8125-26135E28BF35", "versionEndExcluding": "6.12.25", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "29FA1A8E-1C2A-4B0B-B397-2C915ECDEDEE", "versionEndExcluding": "6.14.4", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*", "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*", "matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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)"}], "id": "CVE-2025-39889", "lastModified": "2026-09-26T00:10:00.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39889", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T17:37:06.505788Z", "version": "2.0.3"}}]}, "published": "2025-09-24T11:15:32.780", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/24b2cdfc16e9bd6ab3d03b8e01c590755bd3141f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/522e9ed157e3c21b4dd623c79967f72c21e45b78"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9e3114958d87ea88383cbbf38c89e04b8ea1bce5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c6d527bbd3d3896375079f5dbc8b7f96734a3ba5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d49798ecd26e0ee7995a7fc1e90ca5cd9b4402d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d4ca2fd218caafbf50e3343ba1260c6a23b5676a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ed503d340a501e414114ddc614a3aae4f6e9eae2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-326"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-326"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: Bluetooth: l2cap: Check encryption key size on incoming connection", "id": "2397784", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2397784"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-39889", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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": "2025-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39889\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39889\nhttps://lore.kernel.org/linux-cve-announce/2025092459-CVE-2025-39889-7f8e@gregkh/T"], "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-27T23:47:04.729060+00:00", "value": {"mitigation_remediation": ["Upgrade the Linux kernel to a version that contains the patch implementing the key\u2011size check for incoming L2CAP connections.", "Verify that the kernel build includes the commit referenced in the advisory to confirm the fix is applied.", "If an update cannot be applied immediately, consider disabling or restricting Bluetooth services on the affected systems to prevent unauthorized pairing attempts."], "summary": {"action": "Immediate Patch", "impact": "Security Bypass"}, "threat_synthesis": {"affected_systems": "Linux kernel versions that lack the patch for this check are affected. The affected products include any Linux kernel 6.15 release prior to the commit that implements the key\u2011size verification. Specific version information is not supplied, but the referenced CPE strings indicate all 6.15 release candidates and the trunk kernel are susceptible.", "description_and_impact": "The vulnerability causes the Linux kernel to accept Bluetooth connections that use an encryption key smaller than the required 16\u2011byte value for Security Mode\u00a04 Level\u00a04. As a result, a device could pair with a target using a weak key, potentially allowing the attacker to establish a trusted session without meeting the expected cryptographic strength. The main weakness is a validation failure (CWE\u2011326). This flaw does not directly expose system secrets but undermines the integrity of the security negotiation process, granting unauthorized access to Bluetooth services that would otherwise be protected.", "risk_and_exploitability": "The CVSS score of 8.1 indicates a high severity vulnerability. The EPSS score of less than 1% shows a very low probability of exploitation, and the flaw is not listed in CISA KEV. Likely attackers would need to first establish a Bluetooth link with the target device and then trigger a connection request using a reduced key length. If successful, the attacker can gain a connection with a minimal amount of encryption, effectively bypassing the intended security policy."}}}}, "created": "2025-09-25T08:21:24.113899+00:00", "updated": "2026-04-28T00:00:18.097492+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}