ksmbd: fix out of bounds read in smb2_sess_setup
Summary
| CVE | CVE-2023-3867 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-08-16 14:15:27 UTC |
| Updated | 2026-08-15 13:17:39 UTC |
| 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(). |
Risk And Classification
Primary CVSS: v3.1 7.1 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Problem Types: CWE-125
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | CNA | DECLARED | 9.1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 676392184785ace61e939831e7ca44a03d438c3b git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 ef572ffa8eb44111eed2925fbb2adca78bdcbf61 git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 2ba03cecb12ac7ac9e0170e251543c56832d9959 git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 git | Not specified |
| CNA | Linux | Linux | affected 5.15 | Not specified |
| CNA | Linux | Linux | unaffected 5.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.145 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.40 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.4.5 6.4.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.5 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/2ba03cecb12ac7ac9e0170e251543c56832d9959 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/ef572ffa8eb44111eed2925fbb2adca78bdcbf61 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/676392184785ace61e939831e7ca44a03d438c3b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 199879 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6464-1)
- 199883 Ubuntu Security Notification for Linux kernel (NVIDIA) Vulnerabilities (USN-6466-1)
- 199957 Ubuntu Security Notification for Linux kernel (StarFive) Vulnerabilities (USN-6520-1)
- 200243 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6725-1)