CVE-2025-71150
High
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix refcount leak when invalid session is found on session lookup When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux Kernel
PublishedJan 23, 2026
First seenJan 23, 2026
How to fix
Update
- linux linux_kernel5.16, 6.1.160, 6.6.120, 6.12.64, 6.18.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15.176 ≤ v < 5.16, 6.1.121 ≤ v < 6.1.160, 6.6.67 ≤ v < 6.6.120, 6.12.6 ≤ v < 6.12.64, 6.13.1 ≤ v < 6.18.3, 6.13, 6.19 | 5.16, 6.1.160, 6.6.120, 6.12.64, 6.18.3 |
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