ksmbd: fix out-of-bound read in smb2_write
Summary
| CVE | CVE-2023-3865 |
|---|---|
| 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-bound read in smb2_write ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read in smb2_write. |
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 | 8.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | CNA | DECLARED | 8.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/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 3813eee5154d6a4c5875cb4444cb2b63bac8947f git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 c86211159bc3178b891e0d60e586a32c7b6a231b git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 58a9c41064df27632e780c5a3ae3e0e4284957d1 git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 5fe7f7b78290638806211046a99f031ff26164e1 git | Not specified |
| CNA | Linux | Linux | affected 5.15 | Not specified |
| CNA | Linux | Linux | unaffected 5.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.121 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.36 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.3.10 6.3.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.4 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/5fe7f7b78290638806211046a99f031ff26164e1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/c86211159bc3178b891e0d60e586a32c7b6a231b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/58a9c41064df27632e780c5a3ae3e0e4284957d1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f | 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
- 199809 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6416-1)
- 199814 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6416-2)
- 199840 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-6416-3)
- 199844 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6445-1)
- 199858 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6445-2)
- 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)