CVE-2025-39889 — Inadequate Encryption Strength in Linux
Severity
5.5MEDIUMNVD
OSV3.2
EPSS
0.0%
top 99.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 24
Latest updateMar 25
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
Iden…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages5 packages
▶CVEListV5linux/linux4f911a538e089cce808a15dc3277250f4f8daef9 — ed503d340a501e414114ddc614a3aae4f6e9eae2+7