CVE-2025-22040

ksmbd: fix session use-after-free in multichannel connection

Severity Score

7.0

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

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.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2024-12-29 CVE Reserved
2025-04-16 CVE Published
2025-04-16 CVE Updated
2025-04-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f	2025-04-10
https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737	2025-04-10
https://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17d	2025-04-10
https://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16b	2025-04-10
https://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfd	2025-04-10
https://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345db	2025-04-01

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.134 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.134"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.87 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.87"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.12.23 Search vendor "Linux" for product "Linux Kernel" and version " < 6.12.23"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.13.11 Search vendor "Linux" for product "Linux Kernel" and version " < 6.13.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.14.2 Search vendor "Linux" for product "Linux Kernel" and version " < 6.14.2"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.15-rc1 Search vendor "Linux" for product "Linux Kernel" and version " < 6.15-rc1"		en		Affected