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CVE-2023-3867ksmbd: fix out of bounds read in smb2_sess_setup
- 9.1CriticalCVSS base score
- 6.3%Exploitation in 30 daysEPSS · top 6.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out of bounds read in smb2_sess_setup ksmbd does not consider the case of that smb2 session setup is in compound request. If this is the second payload of the compound, OOB read issue occurs while processing the first payload in the smb2_sess_setup().
Timeline
ID reserved
By Linux
- 2 years later
· 2 years later
Published
- 12 months later
· 12 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 6.3% · top 6.3% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Affected products
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 676392184785ace61e939831e7ca44a03d438c3b
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < ef572ffa8eb44111eed2925fbb2adca78bdcbf61
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 2ba03cecb12ac7ac9e0170e251543c56832d9959
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8
- affected 5.15
- unaffected < 5.15
- unaffected 5.15.145 – ≤ 5.15.*
- unaffected 6.1.40 – ≤ 6.1.*
- unaffected 6.4.5 – ≤ 6.4.*
- unaffected 6.5 – ≤ *
References
References4
- https://git.kernel.org/stable/c/676392184785ace61e939831e7ca44a03d438c3b (opens in a new tab)
- https://git.kernel.org/stable/c/ef572ffa8eb44111eed2925fbb2adca78bdcbf61 (opens in a new tab)
- https://git.kernel.org/stable/c/2ba03cecb12ac7ac9e0170e251543c56832d9959 (opens in a new tab)
- https://git.kernel.org/stable/c/98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-44495 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-3867)Record last updated .