The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Bluetooth: l2cap: Check encryption key size on incoming connection This is required for passing     GAP/SEC/SEM/BI-04-C PTS test case: Security Mode 4 Level 4, Responder - Invalid Encryption Key Size - 128     bit This tests the security key with size from 1 to 15 bytes while the Security Mode 4 Level 4 requests 16     bytes key size. Currently PTS fails with the following logs: - expected:Connection Response: Code: [3     (0x03)] Code Identifier: (lt)WildCard: Exists(gt) Length: [8 (0x0008)] Destination CID: (lt)WildCard:
    Exists(gt) Source CID: [64 (0x0040)] Result: [3 (0x0003)] Connection refused - Security block Status:
    (lt)WildCard: Exists(gt), but received:Connection Response: Code: [3 (0x03)] Code Identifier: [1 (0x01)]     Length: [8 (0x0008)] Destination CID: [64 (0x0040)] Source CID: [64 (0x0040)] Result: [0 (0x0000)]     Connection Successful Status: [0 (0x0000)] No further information available And HCI logs: < HCI Command:
    Read Encrypti.. (0x05|0x0008) plen 2 Handle: 14 Address: 00:1B:DC:F2:24:10 (Vencer Co., Ltd.) > HCI Event:
    Command Complete (0x0e) plen 7 Read Encryption Key Size (0x05|0x0008) ncmd 1 Status: Success (0x00)     Handle: 14 Address: 00:1B:DC:F2:24:10 (Vencer Co., Ltd.) Key size: 7 > ACL Data RX: Handle 14 flags 0x02     dlen 12 L2CAP: Connection Request (0x02) ident 1 len 4 PSM: 4097 (0x1001) Source CID: 64 < ACL Data TX:
    Handle 14 flags 0x00 dlen 16 L2CAP: Connection Response (0x03) ident 1 len 8 Destination CID: 64 Source     CID: 64 Result: Connection successful (0x0000) Status: No further information available (0x0000)     (CVE-2025-39889)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

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Linux Distros Unpatched Vulnerability : CVE-2025-39889

medium Nessus Plugin ID 266030

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Oct 1, 2025, 4:14 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202510010414
Version 1.2 Sep 30, 2025, 12:41 AM CVSS metrics ("CVSSv3 score" set to 5.7) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N") Detection (updated detection logic) Plugin metadata Plugin Feed: 202509300041
Version 1.1 Sep 29, 2025, 6:56 AM New Plugin Feed: 202509290656