CVE-2025-22040
8.8
HIGH
CVSS 3.1
EPSS 0.22%
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it.
How to fix CVE-2025-22040
To remediate CVE-2025-22040, upgrade the affected package to a fixed version below.
- —upgrade to 6.1.135-1 or later
- —upgrade to 6.1.137-1~deb11u1 or later
Is CVE-2025-22040 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 6.1.135-1
- from 0, < 6.1.137-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |