CVE-2023-3866

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in the compound request This patch validate session id and tree id in compound request. If first operation in the compound is SMB2 ECHO request, ksmbd bypass session and tree validation. So work->sess and work->tcon could be NULL. If secound request in the compound access work->sess or tcon, It cause NULL pointer dereferecing error.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/5005bcb4219156f1bf7587b185080ec1da08518e	Patch
https://git.kernel.org/stable/c/854156d12caa9d36de1cf5f084591c7686cc8a9d	Patch
https://git.kernel.org/stable/c/d1066c1b3663401cd23c0d6e60cdae750ce00c0f	Patch
https://git.kernel.org/stable/c/eb947403518ea3d93f6d89264bb1f5416bb0c7d0	Patch

Configurations

Configuration 1 (hide)

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:6.4:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.4:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.4:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.4:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.4:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.4:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.4:rc7::::::

History

No history.

Information

Published : 2025-08-16 14:15

Updated : 2025-11-18 17:58

NVD link : CVE-2023-3866

Mitre link : CVE-2023-3866

CVE.ORG link : CVE-2023-3866

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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