CVE-2025-37924: Debian Linux

High severity, CVSS 7.8. EPSS: 21.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 5.15, before 6.1.138 (fixed in 6.1.138); from 6.2, before 6.6.90 (fixed in 6.6.90); from 6.7, before 6.12.28 (fixed in 6.12.28); from 6.13, before 6.14.6 (fixed in 6.14.6); version 6.15 only

Published 2025-05-20. Last modified 2026-06-17.