CVE-2026-43377 Details
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.
A vulnerability in the Linux kernel's KSMBD component allows for the logging of sensitive key information during SMB3 signing and encryption key generation. When KSMBD_DEBUG_AUTH logging is activated, the functions generate_smb3signingkey() and generate_smb3encryptionkey() inadvertently log session, signing, encryption, and decryption key bytes. This logging could expose credentials, creating a security risk.
Users can update to the latest version of the Linux kernel where this vulnerability has been addressed. Instructions for downloading the patched version are available on the Linux Kernel Archive.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f | kernel.org | Patch |
| https://git.kernel.org/stable/c/407cc37c21d51f9b9d4d20204b04890880cfa6ae | kernel.org | Patch |
| https://git.kernel.org/stable/c/4084ed720d7d5f4e975c9e4a6267a552dad3b24a | kernel.org | Patch |
| https://git.kernel.org/stable/c/441336115df26b966575de56daf7107ed474faed | kernel.org | Patch |
| https://git.kernel.org/stable/c/c6b01b997a2094969e315f1ebfc1d64b8ae2163d | kernel.org | Patch |
| https://git.kernel.org/stable/c/fec5c70b82af3f59f15bb984df94e5ad1fccfb1e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 6.1.167 >= 6.2, < 6.6.130 >= 6.7, < 6.12.78 >= 6.13, < 6.18.20 >= 6.19, < 6.19.9 7.0 rc1 7.0 rc2 7.0 rc3 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 11, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | New CVE Received | kernel.org |