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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2025-39889

Bluetooth: l2cap: Check encryption key size on incoming connection

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: 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)

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 4f911a538e089cce808a15dc3277250f4f8daef9 to < ed503d340a501e414114ddc614a3aae4f6e9eae2affected
  • 288c06973daae4637f25a0d1bdaf65fdbf8455f9 to < 24b2cdfc16e9bd6ab3d03b8e01c590755bd3141faffected
  • 288c06973daae4637f25a0d1bdaf65fdbf8455f9 to < c6d527bbd3d3896375079f5dbc8b7f96734a3ba5affected
  • 288c06973daae4637f25a0d1bdaf65fdbf8455f9 to < 9e3114958d87ea88383cbbf38c89e04b8ea1bce5affected
  • 288c06973daae4637f25a0d1bdaf65fdbf8455f9 to < d49798ecd26e0ee7995a7fc1e90ca5cd9b4402d6affected
  • 288c06973daae4637f25a0d1bdaf65fdbf8455f9 to < d4ca2fd218caafbf50e3343ba1260c6a23b5676aaffected
  • 288c06973daae4637f25a0d1bdaf65fdbf8455f9 to < 522e9ed157e3c21b4dd623c79967f72c21e45b78affected

Linux Linux

Default version status: affected

  • 5.11affected
  • 0 to < 5.11unaffected
  • 5.15.181 to ≤ 5.15.*unaffected
  • 6.1.135 to ≤ 6.1.*unaffected
  • 6.6.88 to ≤ 6.6.*unaffected
  • 6.12.25 to ≤ 6.12.*unaffected
  • 6.14.4 to ≤ 6.14.*unaffected
  • 6.15 to ≤ *unaffected

References