ksmbd: Don't log keys in SMB3 signing and encryption key generation
Summary
| CVE | CVE-2026-43377 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-08 15:16:48 UTC |
| Updated | 2026-05-11 08:16:12 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: ksmbd: Don't log keys in SMB3 signing and encryption key generation When KSMBD_DEBUG_AUTH logging is enabled, generate_smb3signingkey() and generate_smb3encryptionkey() log the session, signing, encryption, and decryption key bytes. Remove the logs to avoid exposing credentials. |
Risk And Classification
Primary CVSS: v3.1 8.1 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.000140000 probability, percentile 0.027310000 (date 2026-05-10)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 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:H/A:N |
| 3.1 | CNA | DECLARED | 8.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 4084ed720d7d5f4e975c9e4a6267a552dad3b24a git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 fec5c70b82af3f59f15bb984df94e5ad1fccfb1e git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 407cc37c21d51f9b9d4d20204b04890880cfa6ae git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 c6b01b997a2094969e315f1ebfc1d64b8ae2163d git | Not specified |
| CNA | Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 441336115df26b966575de56daf7107ed474faed git | Not specified |
| CNA | Linux | Linux | affected 5.15 | Not specified |
| CNA | Linux | Linux | unaffected 5.15 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.78 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.20 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.9 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/fec5c70b82af3f59f15bb984df94e5ad1fccfb1e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4084ed720d7d5f4e975c9e4a6267a552dad3b24a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/407cc37c21d51f9b9d4d20204b04890880cfa6ae | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c6b01b997a2094969e315f1ebfc1d64b8ae2163d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/441336115df26b966575de56daf7107ed474faed | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| 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.