CVE-2025-39942: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size This is inspired by the check for data_offset + data_length.

Affected products

• Linux Linux Kernel: from 5.15.1, before 6.1.154 (fixed in 6.1.154); from 6.2, before 6.6.108 (fixed in 6.6.108); from 6.7, before 6.12.49 (fixed in 6.12.49); from 6.13, before 6.16.9 (fixed in 6.16.9); version 5.15 only; version 6.17 only

Published 2025-10-04. Last modified 2026-07-30.