CVE-2025-38562: Debian Linux

Medium severity, CVSS 5.5. EPSS: 9.5% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference error in generate_encryptionkey If client send two session setups with krb5 authenticate to ksmbd, null pointer dereference error in generate_encryptionkey could happen. sess->Preauth_HashValue is set to NULL if session is valid. So this patch skip generate encryption key if session is valid.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 5.15, before 6.1.148 (fixed in 6.1.148); from 6.2, before 6.6.102 (fixed in 6.6.102); from 6.7, before 6.12.42 (fixed in 6.12.42); from 6.13, before 6.15.10 (fixed in 6.15.10); from 6.16, before 6.16.1 (fixed in 6.16.1)

Published 2025-08-19. Last modified 2026-06-17.