Vulnerability in Linux

CVE-2025-40285

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible refcount leak in smb2_sess_setup() Reference count of ksmbd_session will leak when session need reconnect. Fix this by adding the missing ksmbd_user_session_put().

EPSS: 0.002 (6.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Linux — versions 6.6.67, 6.17.9, 2107ab40629aeabbec369cf34b8cf0f288c3eb1b

References

Frequently asked questions

What is CVE-2025-40285?
CVE-2025-40285 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2025-12-06.
How severe is CVE-2025-40285?
High severity. CVSS v3 base score is 7.5 out of 10.