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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737 cve-icon cve-icon
https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f cve-icon cve-icon
https://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfd cve-icon cve-icon
https://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17d cve-icon cve-icon
https://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16b cve-icon cve-icon
https://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345db cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html cve-icon
https://lore.kernel.org/linux-cve-announce/2025041659-CVE-2025-22040-27ed@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-22040 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-22040 cve-icon
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Fri, 25 Apr 2025 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Mon, 21 Apr 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 21 Apr 2025 15:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Fri, 18 Apr 2025 02:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 16 Apr 2025 14:30:00 +0000

Type Values Removed Values Added
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.
Title ksmbd: fix session use-after-free in multichannel connection
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-04-16T14:11:57.601Z

Updated: 2025-11-03T19:41:21.699Z

Reserved: 2024-12-29T08:45:45.809Z

Link: CVE-2025-22040

cve-icon Vulnrichment

Updated: 2025-04-21T14:57:50.108Z

cve-icon NVD

Status : Modified

Published: 2025-04-16T15:15:56.590

Modified: 2025-11-03T20:17:39.040

Link: CVE-2025-22040

cve-icon Redhat

Severity : Low

Publid Date: 2025-04-16T00:00:00Z

Links: CVE-2025-22040 - Bugzilla