UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
20 explicit affected versions
29 explicit affected versions
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38 explicit affected versions
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24 explicit affected versions
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35 explicit affected versions
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4 explicit affected versions
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1 explicit affected versions
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16 explicit affected versions
7 explicit affected versions
7 explicit affected versions
12 explicit affected versions
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12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
12 explicit affected versions
3 explicit affected versions
37 explicit affected versions
6 explicit affected versions
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2 explicit affected versions
29 explicit affected versions
13 explicit affected versions
35 explicit affected versions
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33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
9 explicit affected versions
24 explicit affected versions
16 explicit affected versions
32 explicit affected versions
10 explicit affected versions
26 explicit affected versions
9 explicit affected versions
16 explicit affected versions
35 explicit affected versions
25 explicit affected versions
3 explicit affected versions
51 explicit affected versions
12 explicit affected versions
24 explicit affected versions
12 explicit affected versions
9 explicit affected versions
8 explicit affected versions
5 explicit affected versions
8 explicit affected versions
7 explicit affected versions
13 explicit affected versions
7 explicit affected versions
27 explicit affected versions
10 explicit affected versions
7 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
2 explicit affected versions
13 explicit affected versions
26 explicit affected versions
21 explicit affected versions
37 explicit affected versions
38 explicit affected versions
25 explicit affected versions
9 explicit affected versions
25 explicit affected versions
11 explicit affected versions
32 explicit affected versions
3 explicit affected versions
6 explicit affected versions
4 explicit affected versions
1 explicit affected versions
30 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
10 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
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/linus/5005bcb4219156f1bf7587b185080ec1da08518e
- https://ubuntu.com/security/CVE-2023-3866
- https://ubuntu.com/security/notices/USN-6416-1
- https://ubuntu.com/security/notices/USN-6416-2
- https://ubuntu.com/security/notices/USN-6416-3
- https://ubuntu.com/security/notices/USN-6445-1
- https://ubuntu.com/security/notices/USN-6445-2
- https://ubuntu.com/security/notices/USN-6464-1
- https://ubuntu.com/security/notices/USN-6466-1
- https://ubuntu.com/security/notices/USN-6520-1
- https://www.cve.org/CVERecord?id=CVE-2023-3866
- https://www.zerodayinitiative.com/advisories/ZDI-23-979/