ksmbd: validate session id and tree id in the compound request
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.
02 / AFFECTED SOFTWARE
Affected packages
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/5005bcb4219156f1bf7587b185080ec1da08518e
- https://git.kernel.org/stable/c/854156d12caa9d36de1cf5f084591c7686cc8a9d
- https://git.kernel.org/stable/c/d1066c1b3663401cd23c0d6e60cdae750ce00c0f
- https://git.kernel.org/stable/c/eb947403518ea3d93f6d89264bb1f5416bb0c7d0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3866.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-3866