CVE-2023-3866

ksmbd: validate session id and tree id in the compound request

Description

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.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

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

Frequently Asked Questions

What is the severity of CVE-2023-3866?: CVE-2023-3866 has not yet been assigned a CVSS score.
How to fix CVE-2023-3866?: To fix CVE-2023-3866, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-3866 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-3866 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3866?: CVE-2023-3866 affects Linux Linux, Linux Linux.

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