CVE-2025-40286

CVE-2025-40286 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible memory leak in smb2_read() Memory leak occurs when ksmbd_vfs_read() fails. Fix this by adding the missing kvfree().

Frequently asked questions

What is CVE-2025-40286?
In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible memory leak in smb2_read() Memory leak occurs when ksmbd_vfs_read() fails. Fix this by adding the missing kvfree().
Is CVE-2025-40286 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-40286?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40286 have an EU (EUVD) identifier?
Yes. CVE-2025-40286 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201569.
When was CVE-2025-40286 published?
CVE-2025-40286 was published on 2025-12-06 and last updated on 2026-06-17.

References