ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer
Summary
| CVE | CVE-2025-39943 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-10-04 08:15:47 UTC |
| Updated | 2026-04-06 13:28:48 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done. |
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
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 2ea086e35c3d726a3bacd0a971c1f02a50e98206 773fddf976d282ef059c36c575ddb81567acd6bc git | Not specified |
| CNA | Linux | Linux | affected 2ea086e35c3d726a3bacd0a971c1f02a50e98206 bdaab5c6538e250a9654127e688ecbbeb6f771d5 git | Not specified |
| CNA | Linux | Linux | affected 2ea086e35c3d726a3bacd0a971c1f02a50e98206 eb0378dde086363046ed3d7db7f126fc3f76fd70 git | Not specified |
| CNA | Linux | Linux | affected 2ea086e35c3d726a3bacd0a971c1f02a50e98206 8be498fcbd5b07272f560b45981d4b9e5a2ad885 git | Not specified |
| CNA | Linux | Linux | affected 2ea086e35c3d726a3bacd0a971c1f02a50e98206 529b121b00a6ee3c88fb3c01b443b2b81f686d48 git | Not specified |
| CNA | Linux | Linux | affected 2ea086e35c3d726a3bacd0a971c1f02a50e98206 5282491fc49d5614ac6ddcd012e5743eecb6a67c git | Not specified |
| CNA | Linux | Linux | affected 5.15 | Not specified |
| CNA | Linux | Linux | unaffected 5.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.194 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.154 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.108 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.49 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.16.9 6.16.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.17 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/773fddf976d282ef059c36c575ddb81567acd6bc | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/529b121b00a6ee3c88fb3c01b443b2b81f686d48 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/8be498fcbd5b07272f560b45981d4b9e5a2ad885 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/5282491fc49d5614ac6ddcd012e5743eecb6a67c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/bdaab5c6538e250a9654127e688ecbbeb6f771d5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/eb0378dde086363046ed3d7db7f126fc3f76fd70 | 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.
There are currently no legacy QID mappings associated with this CVE.