CVE-2023-3866 (GCVE-0-2023-3866)

Vulnerability from cvelistv5 – Published: 2025-08-16 13:27 – Updated: 2025-08-19 05:47
VLAI?
Title
ksmbd: validate session id and tree id in the compound request
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < eb947403518ea3d93f6d89264bb1f5416bb0c7d0 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 854156d12caa9d36de1cf5f084591c7686cc8a9d (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < d1066c1b3663401cd23c0d6e60cdae750ce00c0f (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 5005bcb4219156f1bf7587b185080ec1da08518e (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.36 , ≤ 6.1.* (semver)
Unaffected: 6.3.10 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: validate session id and tree id in the compound request\n\nThis patch validate session id and tree id in compound request.\nIf first operation in the compound is SMB2 ECHO request, ksmbd bypass\nsession and tree validation. So work-\u003esess and work-\u003etcon could be NULL.\nIf secound request in the compound access work-\u003esess or tcon, It cause\nNULL pointer dereferecing error."
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    "datePublished": "2025-08-16T13:27:57.332Z",
    "dateReserved": "2023-07-24T14:52:41.881Z",
    "dateUpdated": "2025-08-19T05:47:13.303Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}


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